Contents 1 Anatomy 1.1 Largest and smallest 1.2 Distinguishing features 2 Physiology 2.1 Locomotion 2.2 Senses 2.3 Venom 2.4 Respiration 2.5 Reproduction and lifecycle 3 Behaviour 3.1 Diurnality and thermoregulation 3.2 Territoriality 3.3 Communication 4 Ecology 4.1 Distribution and habitat 4.2 Diet 4.3 Antipredator adaptations 4.3.1 Camouflage 4.3.2 Autotomy 4.3.3 Escape, playing dead, reflex bleeding 5 Evolution 5.1 Fossil history 5.2 Phylogeny 5.2.1 External 5.2.2 Internal 5.3 Taxonomy 5.4 Convergence 6 Relationship with humans 7 Notes 8 References 8.1 General sources 9 Further reading 10 External links

Anatomy Largest and smallest The adult length of species within the suborder ranges from a few centimeters for chameleons such as Brookesia micra and geckos such as Sphaerodactylus ariasae[2] to nearly 3 m (9.8 ft) in the case of the largest living varanid lizard, the Komodo dragon.[3] Distinguishing features Skin of Lacerta agilis, showing overlapping scales made of keratin Lizards typically have four legs feet and external ears, though some are legless, while snakes lack both of these characteristics. Lizards and snakes share a movable quadrate bone, distinguishing them from the sphenodonts, which have more primitive and solid diapsid skulls. Some lizards such as chameleons have prehensile tails, assisting them in climbing among vegetation.[4] As in other reptiles, the skin of lizards is covered in overlapping scales made of keratin. This provides protection from the environment and reduces water loss through evaporation. This adaptation enables lizards to thrive in some of the driest deserts on earth. The skin is tough and leathery, and is shed (sloughed) as the animal grows. Unlike snakes which shed the skin in a single piece, lizards slough their skin in several pieces. The scales may be modified into spines for display or protection, and some species have bone osteoderms underneath the scales.[4][5] Red tegu (Tupinambis rufescens) skull, showing teeth of differing types The dentitions of lizards reflect their wide range of diets, including carnivorous, insectivorous, omnivorous, herbivorous, nectivorous, and molluscivorous. Species typically have uniform teeth suited to their diet, but several species have variable teeth, such as cutting teeth in the front of the jaws and crushing teeth in the rear. Most species are pleurodont, though agamids and chameleons are acrodont.[6][4] The tongue can be extended outside the mouth, and is often long. In the beaded lizards, whiptails and monitor lizards, the tongue is forked and used mainly or exclusively to sense the environment, continually flicking out to sample the environment, and back to transfer molecules to the vomeronasal organ responsible for chemosensation, analogous to but different from smell or taste. In geckos, the tongue is used to lick the eyes clean: they have no eyelids. Chameleons have very long sticky tongues which can be extended rapidly to catch their insect prey.[4] Three lineages, the geckos, anoles, and chameleons, have modified the scales under their toes to form adhesive pads, highly prominent in the first two groups. The pads are composed of millions of tiny setae which fit closely to the substrate to adhere using molecules forces; no liquid adhesive is needed.[7] In addition, the toes of chameleons are divided into two opposed groups on each foot (zygodactyly), enabling them to perch on branches as birds do.[a][4]

Physiology Locomotion Adhesive pads enable geckos to climb vertically. Aside from legless lizards, most lizards are quadrupedal and move using gaits with alternating movement of the right and left limbs with substantial body bending. This body bending prevents significant respiration during movement, limiting their endurance, in a mechanism called Carrier's constraint. Several species can run bipedally,[8] and a few can prop themselves up on their hindlimbs and tail while stationary. Several small species such as those in the genus Draco can glide: some can attain a distance of 60 metres (200 feet), losing 10 metres (33 feet) in height.[9] Some species, like geckos and chameleons, adhere to vertical surfaces including glass and ceilings.[7] Some species, like the common basilisk, can run across water.[10] Senses Further information: Sense Lizards make use of their senses of sight, touch, olfaction and hearing like other vertebrates. The balance of these varies with the habitat of different species; for instance, skinks that live largely covered by loose soil rely heavily on olfaction and touch, while geckos depend largely on acute vision for their ability to hunt and to evaluate the distance to their prey before striking. Monitor lizards have acute vision, hearing, and olfactory senses. Some lizards make unusual use of their sense organs: chameleons can steer their eyes in different directions, sometimes providing non-overlapping fields of view, such as forwards and backwards at once. Lizards lack external ears, having instead a circular opening in which the tympanic membrane (eardrum) can be seen. Many species rely on hearing for early warning of predators, and flee at the slightest sound.[11] Nile monitor using its tongue for smell As in snakes and many mammals, all lizards have a specialised olfactory system, the vomeronasal organ, used to detect pheromones. Monitor lizards transfer scent from the tip of their tongue to the organ; the tongue is used only for this information-gathering purpose, and is not involved in manipulating food.[12][11] Some lizards, particularly iguanas, have retained a photosensory organ on the top of their heads called the parietal eye, a basal ("primitive") feature also present in the tuatara. This "eye" has only a rudimentary retina and lens and cannot form images, but is sensitive to changes in light and dark and can detect movement. This helps the them detect predators stalking it from above.[13] Venom Some lizards including the gila monster are venomous. Further information: Evolution of snake venom Until 2006 it was thought that among lizards, only the Gila monster and the Mexican beaded lizard were venomous. However, several species of monitor lizards, including the Komodo dragon, produce powerful venom in their oral glands. Lace monitor venom, for instance, causes swift loss of consciousness and extensive bleeding through its pharmacological effects, both lowering blood pressure and preventing blood clotting. Nine classes of toxin known from snakes are produced by lizards. The range of actions provides the potential for new medicinal drugs based on lizard venom proteins.[14][15] Genes associated with venom toxins have been found in the salivary glands on a wide range of lizards, including species traditionally thought of as non-venomous, such as iguanas and bearded dragons. This suggests that these genes evolved in the common ancestor of lizards and snakes, some 200 million years ago (forming a single clade, the Toxicofera).[14] However, most of these putative venom genes were "housekeeping genes" found in all cells and tissues, including skin and cloacal scent glands. The genes in question may thus be evolutionary precursors of venom genes.[16] Respiration Recent studies (2013 and 2014) on the lung anatomy of the savannah monitor and green iguana found them to have a unidirectional airflow system, which involves the air moving in a loop through the lungs when breathing. This was previously thought to only exist in the archosaurs (crocodilians and birds). This may be evidence that unidirectional airflow is an ancestral trait in diapsids.[17][18] Reproduction and lifecycle Trachylepis maculilabris skinks mating As with all tetrapods, lizards rely on internal fertilisation and copulation involves the male inserting one of his hemipenes into the female's cloaca.[19] The majority of species are oviparous (egg laying). The female deposits the eggs in a protective structure like a nest or crevice or simply on the ground.[20] Depending on the species, clutch size can vary from 4–5 percent of the females body weight to 40–50 percent and clutches range from one or a few large eggs to dozens of small ones.[21] Two pictures taken on an eastern fence lizard egg and layered onto one image. In most lizards, the eggs have leathery shells to allow for the exchange of water, although more arid-living species have calcified shells to retain water. Inside the eggs, the embryos use nutrients from the yolk. Parental care is uncommon and the female usually abandons the eggs after laying them. Brooding and protection of eggs does occur in some species. The female prairie skink uses respiratory water loss to maintain the humidity of the eggs which facilitates embryonic development. In lace monitors, the young hatch close to 300 days and the female returns to help them escape the termite mound were the eggs were laid.[20] Around 20 percent of lizard species reproduce via viviparity (live birth). This is particularly common in Anguimorphs. Viviparous species give birth to relatively developed young which look like miniature adults. Embryos are nourished via a placenta-like structure.[22] A minority of lizards have parthenogenesis (reproduction from unfertilised eggs). These species consist of all females who reproduce asexually with no need for males. This is known in occur in various species of whiptail lizards.[23] Parthenogenesis was also recorded in species that normally reproduce sexually. A captive female Komodo dragon produced a clutch of eggs, despite be separated from males for over two years.[24] Sex determination in lizards can be temperature-dependent, at least when it comes to eggs, The temperature of the micro-environment can determine the sex of the hatched young; low temperature incubation produces more females while higher temperatures produce more males. However, some lizards have sex chromosomes and both male heterogamety (XY and XXY) and female heterogamety (ZW) occur.[23]

Behaviour Diurnality and thermoregulation The majority of lizard species are active during the day,[25] though some are active at night, notably geckos. As ectotherms, lizards have a limited ability to regulate their body temperature, and must seek out and bask in sunlight to gain enough heat to become fully active.[26] Territoriality Fighting male sand lizards Most social interactions among lizards are between breeding individuals.[25] Territoriality is common and is correlated with species that use sit-and-wait hunting strategies. Males establish and maintain territories that contain resources which attract females and which they defend from other males. Important resources include basking, feeding, and nesting sites as well as refuges from predators. The habitat of a species affects the structure of territories, for example, rock lizards have territories atop rocky outcrops.[27] Some species may aggregate in groups, enhancing vigilance and lessening the risk of predation for individuals, particularly for juveniles.[28] Agonistic behaviour typically occurs between sexually mature males over territory or mates and may involve displays, posturing, chasing, grappling and biting.[27] A Green Anole (Anolis carolinensis) signalling with its extended dewlap Communication Main article: Lizard communication Lizards signal both to attract mates and to intimidate rivals. Visual displays include body postures and inflation, push-ups, bright colours, mouth gapings and tail waggings. Male anoles and iguanas have dewlaps or skin flaps which come in various sizes, colours and patterns and the expansion of the dewlap as well as head-bobs and body movements add to the visual signals.[29][4] Some species have deep blue dewlaps and communicate with ultraviolet signals.[25] Blue-tongued skinks will flash their tongues as a threat display.[30] Chameleons are known to change their complex colour patterns when communicating, particularly during agonistic encounters. They tend to show brighter colours when displaying aggression[31] and darker colours when they submit or "give up".[32] Several gecko species are brightly coloured; some species tilt their bodies to display their coloration. In certain species, brightly coloured males turn dull when not in the presence of rivals or females. While it is usually males that display, in some species females also use such communication. In the bronze anole, head-bobs are a common form of communication among females, the speed and frequency varying with age and territorial status. Chemical cues or pheromones are also important in communication. Males typically direct signals at rivals, while females direct them at potential mates. Lizards may be able to recognise individuals of the same species by their scent.[29] Tokay gecko mating call Mating call of a male Tokay gecko Problems playing this file? See media help. Acoustic communication is less common in lizards. Hissing, a typical reptilian sound, is mostly produced by larger species as part of a threat display, accompanying gaping jaws. Some groups, particularly geckos, snake-lizards, and some iguanids, can produce more complex sounds and vocal apparatuses have independently evolved in different groups. These sounds are used for courtship, territorial defense and in distress, and include clicks, squeaks, barks and growls. The mating call of the male tokay gecko is heard as "tokay-tokay!".[30][29][33] Tactile communication involves individuals rubbing against each other, either in courtship or in aggression.[29] Some chameleon species communicate with one another by vibrating the substrate that they are standing on, such as a tree branch or leaf.[34]

Ecology Lizard in tree. Many species are tree-dwelling Distribution and habitat Lizards are found worldwide, excluding the far north and Antarctica, and some islands. They can be found in elevations from sea level to 5,000 m (16,000 ft). They prefer warmer, tropical climates but are adaptable and can live in all but the most extreme environments. Lizards also exploit a number of habitats; most primarily live on the ground, but others may live in rocks, on trees, underground and even in water. The marine iguana is adapted for life in the sea.[4] Diet Chameleon's tongue striking at food The majority of lizard species are predatory and the most common prey items are small, terrestrial invertebrates, particularly insects.[4][35] Many species are sit-and-wait predators though others may be more active foragers.[36] Chameleons prey on numerous insect species, such as beetles, grasshoppers and winged termites as well as spiders. They rely on persistence and ambush to capture these prey. An individual perches on a branch and stays perfectly still, with only its eyes moving. When an insect lands, the chameleon focuses its eyes on the target and slowly moves towards it before projecting its long sticky tongue which, when hauled back, brings the attach prey with it. Geckos feed on crickets, beetles, termites and moths.[4][35] Termites are an important part of the diets of some species of Autarchoglossa, since, as social insects, they can be found in large numbers in one spot. Ants may form a prominent part of the diet of some lizards, particularly among the lacertas.[4][35] Horned lizards are also well known for specializing on ants. Due to their small size and ingestible chitin, ants must be consumed in large amounts, and ant-eating lizards have larger stomachs than even herbivorous ones.[37] Species of skink and alligator lizards eat snails and their power jaws and molar-like teeth are adapted for breaking the shells.[4][35] Young Komodo dragon feeding on a water buffalo carcass Marine iguana foraging under water at Galápagos Islands, Ecuador. Larger species, such as monitor lizards, can feed on larger prey including fish, frogs, birds, mammals and other reptiles. Prey may be swallowed whole and torn into smaller pieces. Both bird and reptile eggs may also be consumed as well. Gila monsters and beaded lizards climb trees to reach both the eggs and young of birds. Despite being venomous, these species rely on their strong jaws to kill prey. Mammalian prey typically consists of rodents and leporids; the Komodo dragon can kill prey as large as water buffalo. Dragons are prolific scavengers, and a single decaying carcass can attract several from 2 km (1.2 mi) away. A 50 kg (110 lb) dragon is capable of consuming a 31 kg (68 lb) carcass in 17 minutes.[35] Around 2 percent of lizard species, including many iguanids, are herbivores. Adults of these species eat plant parts like flowers, leaves, stems and fruit, while juveniles eat more insects. Plant parts can be hard to digest and as they get closer to adulthood, juvenile iguanas eat faeces from adults to acquire the microflora necessary for their transition to a plant-based diet. Perhaps the most herbivorous species is the marine iguana which dives 15 m (49 ft) to forage for algae, kelp and other marine plants. Some non-herbivorous species supplement their insect diet with fruit, which is easily digested.[4][35] Antipredator adaptations The frilled-neck lizard with fully extended frill. The frilled serves to make it look bigger than it actually is. Main article: Antipredator adaptation Lizards have a variety of antipredator adaptations, including running and climbing, venom, camouflage, tail autotomy, and reflex bleeding. Camouflage The flat-tail horned lizard's body is flattened and fringed to minimise its shadow. Lizards exploit a variety of different camouflage methods. Many lizards are disruptively patterned. In some species, such as Aegean wall lizards, individuals vary in colour, and select rocks which best match their own colour to minimise the risk of being detected by predators.[38] The Moorish gecko is able to change colour for camouflage: when a light-coloured gecko is placed on a dark surface, it darkens within an hour to match the environment.[39] The chameleons in general use their ability to change their coloration for signalling rather than camouflage, but some species such as Smith's dwarf chameleon do use active colour change for camouflage purposes.[40] The flat-tail horned lizard's body is coloured like its desert background, and is flattened and fringed with white scales to minimise its shadow.[41] Autotomy Play media A skink tail continuing to move after autotomy Many lizards, including geckos and skinks, are capable of shedding their tails (autotomy). The detached tail, sometimes brilliantly coloured, continues to writhe after detaching, distracting the predator's attention from the fleeing prey. Lizards partially regenerate their tails over a period of weeks. Some 326 genes are involved in regenerating lizard tails.[42] The fish-scale gecko Geckolepis megalepis sheds patches of skin and scales if grabbed.[43] Escape, playing dead, reflex bleeding Many lizards attempt to escape from danger by running to a place of safety;[44][b] for example, wall lizards can run up walls and hide in holes or cracks.[7] Horned lizards adopt differing defences for specific predators. They may play dead to deceive a predator that has caught them; attempt to outrun the rattlesnake, which does not pursue prey; but stay still, relying on their cryptic coloration, for Masticophis whip snakes which can catch even swift prey. If caught, some species such as the greater short-horned lizard puff themselves up, making their bodies hard for a narrow-mouthed predator like a whip snake to swallow. Finally, horned lizards can squirt blood at cat and dog predators from a pouch beneath its eyes, to a distance of about two metres (6.6 feet); the blood tastes foul to these attackers.[46]

Evolution Fossil history Fossil lizard Dalinghosaurus longidigitus, Early Cretaceous, China The earliest known fossil remains of a lizard belong to the iguanian species Tikiguania estesi, found in the Tiki Formation of India, which dates to the Carnian stage of the Triassic period, about 220 million years ago.[47] However, doubt has been raised over the age of Tikiguania because it is almost indistinguishable from modern agamid lizards. The Tikiguania remains may instead be late Tertiary or Quaternary in age, having been washed into much older Triassic sediments.[48] Lizards are most closely related to the Rhynchocephalia, which appeared in the Late Triassic, so the earliest lizards probably appeared at that time.[48] Mitochondrial phylogenetics suggest that the first lizards evolved in the late Permian. It had been thought on the basis of morphological data that iguanid lizards diverged from other squamates very early on, but molecular evidence contradicts this.[49] Phylogeny External The position of the lizards and other Squamata among the reptiles was studied using fossil evidence by Rainer Schoch and Hans-Dieter Sues in 2015. Lizards form about 60% of the extant non-avian reptiles.[50] Archelosauria Archosauromorpha Lepidosauromorpha †Kuehneosauridae Lepidosauria Squamata Rhynchocephalia Pantestudines Internal Both the snakes and the Amphisbaenia (worm lizards) are clades deep within the Squamata (the smallest clade that contains all the lizards), so "lizard" is paraphyletic.[51] The cladogram is based on genomic analysis by Wiens and colleagues in 2012 and 2016.[52][53] Excluded taxa are shown in upper case on the cladogram. Squamata Dibamia Dibamidae Bifurcata Gekkota Pygopodomorpha Diplodactylidae Pygopodidae Carphodactylidae Gekkomorpha Eublepharidae Gekkonoidea Sphaerodactylidae Phyllodactylidae Gekkonidae Unidentata Scinciformata Scincomorpha Scincidae Cordylomorpha Xantusiidae Gerrhosauridae Cordylidae Episquamata Laterata Teiformata Gymnophthalmidae Teiidae Lacertibaenia Lacertiformata Lacertidae AMPHISBAENIA (worm lizards, not usually considered "true lizards") Toxicofera Anguimorpha Palaeoanguimorpha Shinisauria Shinisauridae Varanoidea Lanthanotidae Varanidae Neoanguimorpha Helodermatoidea Helodermatidae Xenosauroidea Xenosauridae Anguioidea Diploglossidae Anniellidae Anguidae Iguania Acrodonta Chamaeleonidae Agamidae Pleurodonta Leiocephalidae Iguanidae Hoplocercidae Crotaphytidae Corytophanidae Tropiduridae Phrynosomatidae Dactyloidae Polychrotidae Liolaemidae Leiosauridae Opluridae SERPENTES (snakes, not considered to be lizards) Taxonomy Main article: List of Lacertilia families Artistic restoration of a mosasaur, Prognathodon The name Sauria was coined by James Macartney (1802);[54] it was the Latinisation of the French name Sauriens, coined by Alexandre Brongniart (1800) for an order of reptiles in the classification proposed by the author, containing lizards and crocodilians,[55] later discovered not to be each other's closest relatives. Later authors used the term "Sauria" in a more restricted sense, i.e. as a synonym of Lacertilia, a suborder of Squamata that includes all lizards but excludes snakes. This classification is rarely used today because Sauria so-defined is a paraphyletic group. It was defined as a clade by Jacques Gauthier, Arnold G. Kluge and Timothy Rowe (1988) as the group containing the most recent common ancestor of archosaurs and lepidosaurs (the groups containing crocodiles and lizards, as per Mcartney's original definition) and all its descendants.[56] A different definition was formulated by Michael deBraga and Olivier Rieppel (1997), who defined Sauria as the clade containing the most recent common ancestor of Choristodera, Archosauromorpha, Lepidosauromorpha and all their descendants.[57] However, these uses have not gained wide acceptance among specialists. Suborder Lacertilia (Sauria) – (lizards) Family †Bavarisauridae Family †Eichstaettisauridae Infraorder Iguania Family †Arretosauridae Family †Euposauridae Family Corytophanidae (casquehead lizards) Family Iguanidae (iguanas and spinytail iguanas) Family Phrynosomatidae (earless, spiny, tree, side-blotched and horned lizards) Family Polychrotidae (anoles) Family Leiosauridae (see Polychrotinae) Family Tropiduridae (neotropical ground lizards) Family Liolaemidae (see Tropidurinae) Family Leiocephalidae (see Tropidurinae) Family Crotaphytidae (collared and leopard lizards) Family Opluridae (Madagascar iguanids) Family Hoplocercidae (wood lizards, clubtails) Family †Priscagamidae Family †Isodontosauridae Family Agamidae (agamas, frilled lizards) Family Chamaeleonidae (chameleons) Infraorder Gekkota Family Gekkonidae (geckos) Family Pygopodidae (legless geckos) Family Dibamidae (blind lizards) Infraorder Scincomorpha Family †Paramacellodidae Family †Slavoiidae Family Scincidae (skinks) Family Cordylidae (spinytail lizards) Family Gerrhosauridae (plated lizards) Family Xantusiidae (night lizards) Family Lacertidae (wall lizards or true lizards) Family †Mongolochamopidae Family †Adamisauridae Family Teiidae (tegus and whiptails) Family Gymnophthalmidae (spectacled lizards) Infraorder Diploglossa Family Anguidae (slowworms, glass lizards) Family Anniellidae (American legless lizards) Family Xenosauridae (knob-scaled lizards) Infraorder Platynota (Varanoidea) Family Varanidae (monitor lizards) Family Lanthanotidae (earless monitor lizards) Family Helodermatidae (Gila monsters and beaded lizards) Family †Mosasauridae (marine lizards) The slowworms, Anguis, are among over twenty groups of lizards that have convergently evolved a legless body plan.[58] Convergence Further information: Convergent evolution Lizards have frequently evolved convergently, with multiple groups independently developing similar morphology and ecological niches. Anolis ecomorphs have become a model system in evolutionary biology for studying convergence.[59] Limbs have been lost or reduced independently over two dozen times across lizard evolution, including in the Anniellidae, Anguidae, Cordylidae, Dibamidae, Gymnophthalmidae, Pygopodidae, and Scincidae; snakes are just the most famous and species-rich group of Squamata to have followed this path.[58]

Relationship with humans Most lizard species are harmless to humans. Only the largest lizard species, the Komodo dragon, which reaches 3.3 m (11 ft) in length and weighs up to 166 kg (366 lb), has been known to stalk, attack, and, on occasion, kill humans. An eight-year-old Indonesian boy died from blood loss after an attack in 2007.[60] Green iguanas (Iguana iguana), are popular pets. Numerous species of lizard are kept as pets, including bearded dragons,[61] iguanas, anoles,[62] and geckos (such as the popular leopard gecko).[61] Lizards appear in myths and folktales around the world. In Australian Aboriginal mythology, Tarrotarro, the lizard god, split the human race into male and female, and gave people the ability to express themselves in art. A lizard king named Mo'o features in Hawaii and other cultures in Polynesia. In the Amazon, the lizard is the king of beasts, while among the Bantu of Africa, the god Unkulunkulu sent a chameleon to tell humans they would live forever, but the chameleon was held up, and another lizard brought a different message, that the time of humanity was limited.[63] A popular legend in Maharashtra tells the tale of how a common Indian monitor, with ropes attached, was used to scale the walls of the fort in the Battle of Sinhagad.[64] Green iguanas are eaten in Central America, where they are sometimes referred to as "chicken of the tree" after their habit of resting in trees and their supposedly chicken-like taste,[65] while spiny-tailed lizards are eaten in Africa. In North Africa, Uromastyx species are considered dhaab or 'fish of the desert' and eaten by nomadic tribes.[66] Lizards such as the Gila monster produce toxins with medical applications. Gila toxin reduces plasma glucose; the substance is now synthesised for use in the anti-diabetes drug exenatide (Byetta).[15] Another toxin from Gila monster saliva has been studied for use as an anti-Alzheimer's drug.[67]

Notes ^ Chameleon forefeet have groups composed of 3 inner and 2 outer digits; the hindfeet have groups of 2 inner and 3 outer digits.[4] ^ The BBC's 2016 Planet Earth II showed a sequence of newly-hatched marine iguanas running to the sea past a waiting crowd of racer snakes. It was edited for dramatic effect but the sections were all genuine.[45]

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"Chameleons communicate with complex colour changes during contests: different body regions convey different information". Biology Letters. 9 (6): 20130892. doi:10.1098/rsbl.2013.0892. PMC 3871380 . PMID 24335271.  ^ Ligon, Russell A (2014). "Defeated chameleons darken dynamically during dyadic disputes to decrease danger from dominants". Behavioral Ecology and Sociobiology. 68 (6): 1007–1017. doi:10.1007/s00265-014-1713-z.  ^ Frankenberg, E.; Werner, Y. L. (1992). "Vocal communication in the Reptilia–facts and questions" (PDF). 41. Acta Zoologica: 45–62. CS1 maint: Multiple names: authors list (link) ^ Barnett, K. E.; Cocroft, R. B.; Fleishman, L. J. (1999). "Possible communication by substrate vibration in a chameleon" (PDF). Copeia. 1: 225–228. CS1 maint: Multiple names: authors list (link) ^ a b c d e f Pianka and Vitt, pp. 41–51. ^ Pianka and Vitt, pp. 53–55. ^ Pianka and Vitt, pp. 162. ^ Marshall, Kate; Philpot, Kate E.; Stevens, Martin (25 January 2016). "Microhabitat choice in island lizards enhances camouflage against avian predators". Nature Scientific Reports. 6: 19815. doi:10.1038/srep19815. CS1 maint: Multiple names: authors list (link) ^ Yong, Ed (16 July 2014). "Lizard 'Sees' With Its Skin For Automatic Camouflage". National Geographic.  ^ Stuart-Fox, Devi; Moussalli, Adnan; Whiting, Martin J. (23 August 2008). "Predator-specific camouflage in chameleons". Biology Letters. 4 (4). doi:10.1098/rsbl.2008.0173.  ^ Sherbrooke, WC (2003). Introduction to horned lizards of North America. University of California Press. pp. 117–118. ISBN 978-0-520-22825-2.  ^ Scientists discover how lizards regrow tails, The Independent, August 20, 2014 ^ Scherz, Mark D.; et al. (2017). "Off the scale: a new species of fish-scale gecko (Squamata: Gekkonidae: Geckolepis) with exceptionally large scales". PeerJ. 5: e2955. PMID 28194313. CS1 maint: Explicit use of et al. (link) ^ Cooper, William E., Jr. (2010). "Initiation of Escape Behavior by the Texas Horned Lizard (Phrynosoma cornutum)". Herpetologica. 66 (1): 23–30. doi:10.1655/08-075.1.  ^ "From Planet Earth II, a baby iguana is chased by snakes". BBC. 15 November 2016.  ^ Hewitt, Sarah (5 November 2015). "If it has to, a horned lizard can shoot blood from its eyes". BBC.  ^ Datta, P.M. & Ray, S. (2006). "Earliest lizards from the Late Triassic (Carnian) of India". Journal of Vertebrate Paleontology. 26 (4): 95–800. doi:10.1671/0272-4634(2006)26[795:ELFTLT]2.0.CO;2.  ^ a b Hutchinson, M.N.; Skinner, A.; Lee, M.S.Y. (2012). "Tikiguania and the antiquity of squamate reptiles (lizards and snakes)". Biology Letters. 8 (4): 665–9. doi:10.1098/rsbl.2011.1216. PMC 3391445 . PMID 22279152.  ^ Kumazawa, Yoshinori (2007). "Mitochondrial genomes from major lizard families suggest their phylogenetic relationships and ancient radiations". Gene. 388 (1–2): 19–26. doi:10.1016/j.gene.2006.09.026. PMID 17118581.  ^ Schoch, Rainer R.; Sues, Hans-Dieter (24 June 2015). "A Middle Triassic stem-turtle and the evolution of the turtle body plan". Nature. 523: 584–587. doi:10.1038/nature14472. PMID 26106865. (Subscription required (help)).  ^ Reeder, Tod W.; Townsend, Ted M.; Mulcahy, Daniel G.; Noonan, Brice P.; Wood, Perry L.; Sites, Jack W.; Wiens, John J. (2015). "Integrated Analyses Resolve Conflicts over Squamate Reptile Phylogeny and Reveal Unexpected Placements for Fossil Taxa". PLOS ONE. 10 (3): e0118199. doi:10.1371/journal.pone.0118199. PMC 4372529 . PMID 25803280.  ^ Wiens, J. J.; Hutter, C. R.; Mulcahy, D. G.; Noonan, B. P.; Townsend, T. M.; Sites, J. W.; Reeder, T. W. (2012). "Resolving the phylogeny of lizards and snakes (Squamata) with extensive sampling of genes and species". Biology Letters. 8 (6): 1043–1046. doi:10.1098/rsbl.2012.0703. PMC 3497141 . PMID 22993238.  ^ Zheng, Yuchi; Wiens, John J. (2016). "Combining phylogenomic and supermatrix approaches, and a time-calibrated phylogeny for squamate reptiles (lizards and snakes) based on 52 genes and 4162 species". Molecular Phylogenetics and Evolution. 94: 537–547. doi:10.1016/j.ympev.2015.10.009. PMID 26475614.  ^ James Macartney: Table III in: George Cuvier (1802) "Lectures on Comparative Anatomy" (translated by William Ross under the inspection of James Macartney). Vol I. London, Oriental Press, Wilson and Co. ^ Alexandre Brongniart (1800) "Essai d’une classification naturelle des reptiles. 1ère partie: Etablissement des ordres." Bulletin de la Science. Société Philomathique de Paris 2 (35): 81-82 ^ Gauthier, J. A.; Kluge, A. G.; Rowe, T. (June 1988). "Amniote phylogeny and the importance of fossils". Cladistics. John Wiley & Sons. 4 (2): 105–209. doi:10.1111/j.1096-0031.1988.tb00514.x.  ^ Debraga, M. & Rieppel, O. (1997). "Reptile phylogeny and the interrelationships of turtles". Zoological Journal of the Linnean Society. 120 (3): 281–354. doi:10.1111/j.1096-3642.1997.tb01280.x.  ^ a b Brandley, Matthew C.; et al. (August 2008). "Rates And Patterns In The Evolution Of Snake-Like Body Form In Squamate Reptiles: Evidence For Repeated Re-Evolution Of Lost Digits And Long-Term Persistence Of Intermediate Body Forms". Evolution. 62 (8): 2042–2064. doi:10.1111/j.1558-5646.2008.00430.x. CS1 maint: Explicit use of et al. (link) ^ Losos, Jonathan B. (1992). "The Evolution of Convergent Structure in Caribbean Anolis Communities". Systematic Biology. 41 (4): 403–420. doi:10.1093/sysbio/41.4.403.  ^ "Komodo dragon kills boy in Indonesia". MSNBC. Retrieved 2011-11-07.  ^ a b Virata, John B. "5 Great Beginner Pet Lizards". Reptiles Magazine. Retrieved 28 May 2017.  ^ McLeod, Lianne. "An Introduction to Green Anoles as Pets". The Spruce. Retrieved 28 May 2017.  ^ Greenberg, Daniel A. (2004). Lizards. Marshall Cavendish. pp. 15–16. ISBN 978-0-7614-1580-0.  ^ Auffenberg, Walter (1994). The Bengal Monitor. University Press of Florida. p. 494. ISBN 0-8130-1295-3.  ^ Referencias culturales - todo iguanas verdes ^ Grzimek, Bernhard. Grzimek's Animal Life Encyclopedia (Second Edition) Vol 7 – Reptiles. (2003) Thomson – Gale. Farmington Hills, Minnesota. Vol Editor – Neil Schlager. ISBN 0-7876-5783-2 (for vol.7). p. 48 ^ "Alzheimer's research seeks out lizards". BBC. 5 April 2002.  General sources Pianka, E. R.; Vitt, L. J. (2003). Lizards: Windows to the Evolution of Diversity. University of California Press. ISBN 0-520-23401-4. CS1 maint: Multiple names: authors list (link)

Further reading Behler, John L.; King, F. Wayne (1979). The Audubon Society Field Guide to Reptiles and Amphibians of North America. New York: Alfred A. Knopf. p. 581. ISBN 0-394-50824-6.  Capula, Massimo; Behler, John L. (1989). Simon & Schuster's Guide to Reptiles and Amphibians of the World. New York: Simon & Schuster. ISBN 0-671-69098-1.  Cogger, Harold; Zweifel, Richard (1992). Reptiles & Amphibians. Sydney: Weldon Owen. ISBN 0-8317-2786-1.  Conant, Roger; Collins, Joseph (1991). A Field Guide to Reptiles and Amphibians Eastern/Central North America. Boston, Massachusetts: Houghton Mifflin Company. ISBN 0-395-58389-6.  Ditmars, Raymond L (1933). Reptiles of the World: The Crocodilians, Lizards, Snakes, Turtles and Tortoises of the Eastern and Western Hemispheres. New York: Macmillan. p. 321.  Freiberg, Marcos; Walls, Jerry (1984). The World of Venomous Animals. New Jersey: TFH Publications. ISBN 0-87666-567-9.  Gibbons, J. Whitfield (1983). Their Blood Runs Cold: Adventures With Reptiles and Amphibians. Alabama: University of Alabama Press. p. 164. ISBN 978-0-8173-0135-4.  Greenberg, Daniel A. (2004). Lizards. Marshall Cavendish. ISBN 9780761415800.  Rosenfeld, Arthur (1987). Exotic Pets. New York: Simon & Schuster. p. 293. ISBN 0671636901. 

External links Wikimedia Commons has media related to Sauria. Data related to Sauria at Wikispecies  Ernest Ingersoll (1920). "Lizard". Encyclopedia Americana.  Authority control GND: 4013473-8 NDL: 00577367 Retrieved from "" Categories: LizardsHettangian first appearancesExtant Early Jurassic first appearancesParaphyletic groupsHidden categories: CS1 maint: Multiple names: authors listCS1 maint: Explicit use of et al.All articles with dead external linksArticles with dead external links from January 2018Articles with permanently dead external linksPages containing links to subscription-only contentWikipedia indefinitely move-protected pagesArticles with hAudio microformatsPages using div col without cols and colwidth parametersWikipedia articles incorporating a citation from the Encyclopedia Americana with a Wikisource referenceWikipedia articles with GND identifiers

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Lizard (disambiguation)Early JurassicHoloceneMegaannumPrecambrianCambrianOrdovicianSilurianDevonianCarboniferousPermianTriassicJurassicCretaceousPaleogeneNeogeneLate TriassicClockwise From Top Left: Veiled Chameleon (Chamaeleo Calyptratus), Rock Monitor (Varanus Albigularis), Common Blue-tongued Skink (Tiliqua Scincoides), Italian Wall Lizard (Podarcis Sicula), Giant Leaf-tailed Gecko (Uroplatus Fimbriatus), And Legless Lizard (Anelytropsis Papillosus)Veiled ChameleonRock MonitorTiliqua ScincoidesItalian Wall LizardUroplatus FimbriatusAnelytropsis PapillosusBiological ClassificationAnimaliaChordataReptiliaSquamataParaphyleticAlbert C. L. G. GüntherAnguimorphaGekkotaIguaniaLacertoideaScincomorphaSnakeAmphisbaeniaSynonym (taxonomy)James Macartney (anatomist)SquamataReptileSpeciesAntarcticaIslandParaphyleticSnakeAmphisbaeniaChameleonGeckoKomodo DragonDraco (genus)Territory (animal)Sit-and-wait PredatorsWater BuffaloAntipredator AdaptationVenomCamouflageReflex BleedingAutotomySuborder (biology)ChameleonBrookesia MicraGeckoJaragua SphaeroVaranidKomodo DragonEnlargeLacerta AgilisScale (anatomy)KeratinQuadrate BoneSphenodontiaDiapsidSkullPrehensileScale (anatomy)KeratinOsteodermEnlargeTupinambis RufescensPleurodontAcrodontGeckoAnoleChameleonGeckoZygodactylyEnlargeGeckoLegless LizardsGaitCarrier's ConstraintDraco (genus)Common BasiliskSenseSenseSightTouchOlfactionHearingVertebrateEnlargeVomeronasal OrganPheromoneParietal EyeBasal (phylogenetics)TuataraEnlargeGila MonsterVenomEvolution Of Snake VenomGila MonsterMexican Beaded LizardKomodo DragonGlandVaranus VariusBlood PressureBlood ClottingToxinMedicinal DrugProteinEvolution Of Snake VenomSnakeCladeToxicoferaSavannah MonitorGreen IguanaArchosaursCrocodilianBirdDiapsidEnlargeSkinksHemipenisCloacaOviparousEnlargeEastern Fence LizardYolkEgg IncubationPrairie SkinkLace MonitorViviparityPlacentaParthenogenesisWhiptail LizardTemperature-dependent Sex DeterminationSex ChromosomesHeterogametic SexDiurnalityNocturnalityEctothermEnlargeSand LizardsTerritory (animal)Agonistic BehaviourEnlargeAnolis CarolinensisSignalling TheoryDewlapLizard CommunicationAnoleDewlapUltravioletBlue-tongued SkinkThreat DisplayBronze AnolePheromoneFile:Mating Call Of A Male Tokay Gecko (Gekko Gecko).oggMating CallWikipedia:Media HelpConvergent EvolutionTokay GeckoOnomatopoeiaEnlargeEnlargeChameleonPredatoryInsectSit-and-wait PredatorsBeetleGrasshopperTermitesSpiderCricket (insect)MothSocial InsectAntHorned LizardChitinHerbivorousAlligator LizardSnailEnlargeWater BuffaloEnlargeRodentLeporidaeWater BuffaloScavengerIntestinal FloraAlgaKelpEnlargeChlamydosaurusAntipredator AdaptationAntipredator AdaptationVenomCamouflageAutotomyReflex BleedingEnlargeFlat-tail Horned LizardCamouflage MethodsDisruptively PatternedAegean Wall LizardMoorish GeckoAdaptive CamouflageChameleonSmith's Dwarf ChameleonFlat-tail Horned LizardCamouflageEnlargeAutotomyGeckoSkinkAutotomyRegeneration (biology)Geckolepis MegalepisThanatosisRattlesnakeMasticophisGreater Short-horned LizardAutohaemorrhagingFelidaeCanidaeEnlargeDalinghosaurusEarly CretaceousIguaniaTiki FormationIndiaCarnianTriassicAgamidTertiaryQuaternaryRhynchocephaliaLate TriassicPermianMolecular PhylogenySquamataArchelosauriaArchosauromorphaLepidosauromorphaKuehneosauridaeLepidosauriaSquamataRhynchocephaliaPantestudinesAmphisbaeniaCladeSquamataParaphyleticDibamidaeGekkotaDiplodactylidaePygopodidaeCarphodactylidaeEublepharidaeSphaerodactylidaePhyllodactylidaeGekkonidaeUnidentata (page Does Not Exist)ScincomorphaScincomorphaScincidaeCordylomorpha (page Does Not Exist)XantusiidaeGerrhosauridaeCordylidaeEpisquamata (page Does Not Exist)LacertoideaGymnophthalmidaeTeiidaeLacertibaenia (page Does Not Exist)LacertidaeAmphisbaeniaToxicoferaAnguimorphaShinisauriaShinisauridaeVaranoideaLanthanotidaeVaranidaeNeoanguimorpha (page Does Not Exist)HelodermatidaeXenosauroidea (page Does Not Exist)XenosauridaeAnniellidaeAnguidaeIguaniaAcrodonta (lizard)ChamaeleonidaeAgamidaePleurodontaLeiocephalidaeIguanidaeHoplocercidaeCrotaphytidaeCorytophanidaeTropiduridaePhrynosomatidaeDactyloidaePolychrotidaeLiolaemidaeLeiosauridaeOpluridaeSerpentesList Of Lacertilia FamiliesEnlargePrognathodonSauriaJames Macartney (anatomist)Alexandre BrongniartCrocodiliaSquamataSnakeParaphyleticCladeJacques GauthierArchosaurLepidosauriaChoristoderaArchosauromorphaLepidosauromorphaBavarisauridaeIguaniaEuposauridaeCorytophanidaeIguanidaeIguanaSpinytail IguanasPhrynosomatidaeEarless LizardSpiny LizardUrosaurusSide-blotched LizardHorned LizardPolychrotidaeAnolisLeiosauridaeTropiduridaeLiolaemidaeLeiocephalidaeCrotaphytidaeCrotaphytusGambeliaOpluridaeHoplocercidaePriscagamidaeIsodontosauridaeAgamidaeAgama (lizard)ChlamydosaurusChamaeleonidaeChameleonGekkotaGekkonidaeGeckoPygopodidaeDibamidaeScincomorphaParamacellodidaeScincidaeCordylidaeGerrhosauridaeXantusiidaeLacertidaeTeiidaeTeguGymnophthalmidaeAnguidaeAnniellidaeXenosauridaePlatynotaVaranoideaVaranidaeLanthanotidaeHelodermatidaeGila MonsterMexican Beaded LizardMosasaurEnlargeAnguisConvergent EvolutionBody PlanConvergent EvolutionConvergent EvolutionEcological NicheAnolis EcomorphsLegless LizardAnniellidaeAnguidaeCordylidaeDibamidaeGymnophthalmidaePygopodidaeScincidaeKomodo DragonEnlargeGreen IguanaPetPogonaIguanaAnolisGeckoLeopard GeckoAustralian Aboriginal MythologyMaharashtraBengal MonitorBattle Of SinhagadGreen IguanaUromastyxAfricaDiabetesExenatideAlzheimer'sMarine IguanaGalapagos RacerInternational Standard Book 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