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Xenosauridae
Xenosauridae is a family of anguimorph lizards whose only living representative is the genus '' Xenosaurus'', which is native to Central America. Xenosauridae also includes the extinct genera '' Exostinus'' and '' Restes''. Also known as knob-scaled lizards, they have rounded, bumpy scales and osteoderms. Most living species prefer humid, rocky habitats, although they are widespread within their native regions, with some inhabiting semi-arid scrub environments. They are carnivorous or insectivorous, and give birth to live young. '' Shinisaurus'', the Chinese crocodile lizard, was once also regarded as a member of Xenosauridae, but most recent studies of the evolutionary relationships of anguimorphs consider ''Shinisaurus'' to be more closely related to monitor lizards and helodermatids than to ''Xenosaurus''. Xenosauridae is part of a larger clade In biology, a clade (), also known as a Monophyly, monophyletic group or natural group, is a group of organisms that is compose ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xenosaurus
''Xenosaurus'' is a genus of lizards; it is the only extant genus in the family Xenosauridae, with 14 species currently recognized."Xenosauridae" and "''Xenosaurus'' ". The Reptile Database. www.reptile-database.org. Also known as knob-scaled lizards, they can found in southwestern Tamaulipas and eastern Guerrero in Mexico. These lizards are known to feed on a variety of crawling and flying insects. This genus mostly eats orthopterans, coleopterans (beetles), dipterans, and myriapods. Species The following 14 species are recognized as being valid. *''Xenosaurus agrenon'' *'' Xenosaurus arboreus'' *'' Xenosaurus fractus'' *'' Xenosaurus grandis'' *'' Xenosaurus manipulus'' *'' Xenosaurus mendozai'' *''Xenosaurus newmanorum'' *'' Xenosaurus penai'' *''Xenosaurus phalaroanthereon'' *''Xenosaurus platyceps'' *'' Xenosaurus rackhami'' *''Xenosaurus rectocollaris'' *'' Xenosaurus sanmartinensis'' - San Martin knob-scaled lizard *'' Xenosaurus tzacualtipantecus'' ''Not ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carusioidea
Carusioidea is a clade of lizards that includes the family Xenosauridae (knob-scaled lizards) from Central America and the extinct genus '' Carusia'' from the Late Cretaceous of Mongolia. It was named in 1998 after a sister-group relationship was found between ''Carusia'' and Xenosauridae. Phylogenetic analysis indicates that Carusioidea is the most basal clade within Anguimorpha. Features that help define Carusioidea include closely spaced orbits or eye sockets separated by fused frontal bones, a connection between the jugal and squamosal bones below the supratemporal arch, and a covering of bony osteoderms over the skull roof. Below is a cladogram A cladogram (from Greek language, Greek ''clados'' "branch" and ''gramma'' "character") is a diagram used in cladistics to show relations among organisms. A cladogram is not, however, an Phylogenetic tree, evolutionary tree because it does not s ... showing the phylogenetic relationships of carusioids from Gao and Norell (1998): ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xenostius
''Xenostius'' is an extinct genus of xenosaurid that inhabited Mongolia during the Cretaceous period. It contains a single species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ..., ''X. futilus''. References {{Taxonbar, from=Q132156932 Fossil taxa described in 2019 Xenosauridae Prehistoric lizard genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anguimorph
The Anguimorpha is a suborder of squamates. The group was named by Fürbringer in 1900 to include all autarchoglossans closer to '' Varanus'' and ''Anguis'' than ''Scincus''. These lizards, along with iguanians and snakes, constitute the proposed "venom clade" Toxicofera of all venomous reptiles. Evolution The oldest widely accepted member of Anguimorpha is '' Dorsetisaurus'' from the Late Jurassic of Europe and North America. In 2022, the genus '' Cryptovaranoides'' was described from the latest Triassic (Rhaetian) of England. ''Cryptovaranoides'' was recovered in the study as a crown-group anguimorph, and therefore the oldest crown group-squamate, 35 million years older than any previously known crown-group squamate. However, a 2023 study found that ''Cryptovaranoides'' most likely represents an archosauromorph that was only distantly related to squamates. Families Anguidae There are 9 genera found within the Anguidae family. They are characterized by being heavily arm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lizard
Lizard is the common name used for all Squamata, squamate reptiles other than snakes (and to a lesser extent amphisbaenians), encompassing over 7,000 species, ranging across all continents except Antarctica, as well as most Island#Oceanic islands, oceanic Archipelago, island chains. The grouping is Paraphyly, paraphyletic as some lizards are more closely related to snakes than they are to other lizards. Lizards range in size from chameleons and geckos a few centimeters long to the 3-meter-long Komodo dragon. Most lizards are quadrupedal, running with a strong side-to-side motion. Some lineages (known as "legless lizards") have secondarily lost their legs, and have long snake-like bodies. Some lizards, such as the forest-dwelling ''Draco (genus), Draco'', are able to glide. They are often Territory (animal), territorial, the males fighting off other males and signalling, often with bright colours, to attract mates and to intimidate rivals. Lizards are mainly carnivorous, often b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carusia
''Carusia'' is an extinct genus of lizards from the Late Cretaceous of Mongolia. It is a close relative of the family Xenosauridae, which includes living knob-scaled lizards. Fossils of the type and only species ''Carusia intermedia'' come from the late-Campanian age Barun Goyot Formation and have been found in the Flaming Cliffs, Ukhaa Tolgod, and Kheerman Tsav fossil localities. ''Carusia'' was first described in 1985 under the name ''Carolina intermedia'', but since the name ''Carolina'' was preoccupied by a genus of scarab beetles that had been named in 1880, it was renamed ''Carusia intermedia''. ''Carusia'' had initially been known from fragmentary skull material, complicating efforts to determine its evolutionary relationships with other lizards; it had variously been described as an indeterminate scincomorph, a xenosaurid, or some other type of autarchoglossan lizard convergent with xenosaurids. However, the discovery of 35 complete skulls in the 1990s, three of whi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xenosaurus Platyceps
''Xenosaurus platyceps'', the flathead knob-scaled lizard, is a lizard found in the Sierra Madre Oriental of Mexico. Its natural habitat is dry scrub forest and oak savanna. The species is endangered due to habitat fragmentation for the development of tourism and agriculture as well as predation by feral cats. Currently, the flathead knob-scaled lizard does not live in a protected area. Temperature plays a large part in growth rates of Xenosaurus Platyceps along with genetic factors. It has been found that the flathead knob-scaled lizards living in lower elevation, in a more tropical environment, grow virtually twice as fast as those from higher elevations, in a more temperate environment. References Xenosauridae Reptiles described in 1968 Endemic reptiles of Mexico Fauna of the Sierra Madre Oriental {{lizard-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exostinus
''Exostinus'' is an extinct genus of xenosaurid lizard from the Late Cretaceous to Oligocene of the western United States. It was named in 1873 by Edward Drinker Cope as ''Exostinus serratus'' for jaw and skull bones found in the White River Formation of Colorado showing distinguishing cranial scutes. Material of ''E. serratus'' is also known from the Brule Formation, also Middle Oligocene in age, but in Wyoming. A second species, ''E. lancensis'' was named in 1928 by Charles W. Gilmore and is also known from skull and jaw bones, from the Maastrichtian Hell Creek, Lance and Fort Union Formations, and the Paleocene Tongue River Formation The Tongue River Member is the uppermost Member (geology), geologic member of the Fort Union Formation in Montana, North Dakota, Wyoming. The strata are yellow or light-colored massive sandstones and numerous thick coal beds. The vertebrate fo .... Other species named by Gilmore are now considered synonyms of ''E. lancensis''. References ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blutwurstia
''Blutwurstia'' is an extinct genus of lizards from the Eocene of Wyoming. The type and only species is ''Blutwurstia oliviae''. It is closely related to the modern lizard ''Xenosaurus''. The genus name is derived from the German for blood sausage A blood sausage is a sausage filled with blood that is cooked or dried and mixed with a filler until it is thick enough to solidify when cooled. Most commonly, the blood of pigs, sheep, lamb, cow, chicken, or goose is used. In Europe and the .... References Xenosauridae Prehistoric lizard genera Eocene North America Biota of Wyoming Fossil taxa described in 2022 {{paleo-lizard-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lizard Families
This is a list of the extant lizard families. Lizards are an paraphyly, informal group of Squamata, squamates. Taxonomy There are five infraorders which separate the lizards, these are- Diploglossa, Gekkota, Iguania, Platynota and Scincomorpha. This separation is based mainly on morphological similarities between family groups. The Diploglossans and Platynotans are two closely related infraorders which are very diverse families. Very few generalisations can be placed upon these families morphologically. Many species are limbless, while others have fully formed limbs. It is believed that these lizards are the closest lizard relation to the snakes. The Gekkotans are the second most diverse group of lizards. They can be morphologically distinguished by the absence of temporal arches, which allows greater moveability of the head. Most species also have cloacal sacs and fixed eyelids. The Iguanians are another diverse group of lizards. All iguanians are fully limbed. Most species amb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shinisaurus
The Chinese crocodile lizard (''Shinisaurus crocodilurus'') is a semiaquatic anguimorph lizard found only in cool forests in southeastern China and northeastern Vietnam. The Chinese crocodile lizard spends much of its time in shallow water or in overhanging branches and vegetation, where it hunts its prey of insects, snails, tadpoles, and worms. Individuals in captivity may be fed baby mice.Chinese Crocodile Lizard (''Shinisaurus crocodilurus''). The Sacramento Zoological Society. A rare and little-studied lizard, it is listed in Appendix II, which regulates international trade of specimens. This is the only species in the |
