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Anchaurosaurus Gilmorei
''Anchaurosaurus'' (meaning "morning lizard" in Latin) is an extinct genus of iguanian lizard from the Late Cretaceous of Inner Mongolia, China. It belongs to an extinct clade of iguanians called Gobiguania that was endemic to the Gobi Desert during the Late Cretaceous. The type species, ''Anchaurosaurus gilmorei'', was named in 1995 on the basis of a well-preserved skull and incomplete skeleton from the Djadochta Formation. Compared to other iguanians, ''Anchaurosaurus'' has a relatively elongated skull, large eye sockets, and higher tooth crowns. Phylogenetic analysis indicates that among gobiguanians, ''Anchaurosaurus'' is most closely related to '' Zapsosaurus'' from Mongolia. Below is a cladogram A cladogram (from Greek ''clados'' "branch" and ''gramma'' "character") is a diagram used in cladistics to show relations among organisms. A cladogram is not, however, an evolutionary tree because it does not show how ancestors are related to d ... from Daza ''et al.'' (2012) sho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Cretaceous
The Late Cretaceous (100.5–66 Ma) is the younger of two epochs into which the Cretaceous Period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous Series. The Cretaceous is named after ''creta'', the Latin word for the white limestone known as chalk. The chalk of northern France and the white cliffs of south-eastern England date from the Cretaceous Period. Climate During the Late Cretaceous, the climate was warmer than present, although throughout the period a cooling trend is evident. The tropics became restricted to equatorial regions and northern latitudes experienced markedly more seasonal climatic conditions. Geography Due to plate tectonics, the Americas were gradually moving westward, causing the Atlantic Ocean to expand. The Western Interior Seaway divided North America into eastern and western halves; Appalachia and Laramidia. India maintained a northward course towards Asia. In the Southern Hemisphere, Australia and Ant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Huehuecuetzpalli Mixtecus
''Huehuecuetzpalli mixtecus'' is an extinct lizard from the Early Cretaceous (specifically the middle to late Aptian stage) Tlayúa Formation in Tepexi de Rodríguez, Central Mexico. Although it is not the oldest known lizard, ''Huehuecuetzpalli'' may be amongst the most basal members of Squamata (the group that includes lizards and snakes), making it an important taxon in understanding the origins of squamates. The generic name comes from the Nahuatl words ''huehuetl'' ("the ancient") and ''cuetzpalli'' ("lizard"), while the specific name refers to the La Mixteca region. Description Unique characteristics (autapomorphies) of ''Huehuecuetzpalli'' include a long pair of premaxilla bones at the tip of the upper jaw that contributes to an elongated snout and the apparent retraction of the external nares or nostril openings. At the top of the skull, a small rounded postfrontal and a hole called the parietal foramen between the junction of the frontal bone and the parietal bone ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isodontosaurus Gracilis
''Isodontosaurus'' is an extinct genus of iguanian lizard from the Late Cretaceous of Mongolia and China. The type species is ''Isodontosaurus gracilis''. ''Isodontosaurus'' is part of an extinct group of Late Cretaceous iguanians called Gobiguania Gobiguania is an extinct clade of iguanian lizards from the Late Cretaceous. All known gobiguanians are endemic to the Gobi Desert of Mongolia. Gobiguania was given a phylogenetic definition by Jack Conrad and Mark Norell in 2007 as all taxa mor ..., which is currently thought to be endemic to Mongolia. References External links Isodontosaurus on paleofile.com Cretaceous lizards Prehistoric lizard genera Late Cretaceous lepidosaurs of Asia Fossil taxa described in 1943 Taxa named by Charles W. Gilmore {{paleo-lizard-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Igua Minuta
''Igua'' is an extinct genus of iguanian lizards belonging to a group called Gobiguania that was endemic to the Gobi Desert during the Late Cretaceous. The type species ''Igua minuta'' was named in 1991 on the basis of a skull from the Barun Goyot Formation in Mongolia. The skull itself is very small, only long, and may have belonged to a juvenile given that it possesses a large fontanelle and that many of the bones are unfused. The snout-vent length of the individual (the total body length minus the tail) is estimated to have been . ''Igua'' differs from related gobiguanians like ''Polrussia'' in having a more rounded skull. It is similar in appearance to the living genera '' Liolaemus'' and ''Tropidurus ''Tropidurus'' is a genus of reptiles. The genus includes many species of Neotropical ground lizards (family Tropiduridae). ''Tropidurus'' is the type genus of the family Tropiduridae. Geographic range and habitat Species in the genus ''Tropid ...''. The teeth are tricu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polrussia Mongoliensis
''Polrussia'' is an extinct genus of iguanian lizards dating to the Late Cretaceous epoch, found in what is now Mongolia. It belongs to a group of extinct iguanians called Gobiguania that was endemic to the Gobi Desert during the Late Cretaceous. The type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen ... ''Polrussia mongoliensis'' was named in 1991 on the basis of a skull found in the Barun Goyot Formation. The genus name refers to the Polish and Russian paleontologists who worked together to find and describe the material. ''Polrussia'' has a short skull, slightly pointed and flattened snout, and large eye sockets. The teeth each have one cusp, as opposed to the multiple cusps seen in some other gobiguanians. The skull is only long, making ''Polrussia'' one of the small ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polychrotidae
The Polychrotidae family (sometimes classified as the Polychrotinae subfamily instead) of iguanian lizards contains the living genus ''Polychrus'' (commonly called bush anoles) and the extinct genus ''Afairiguana''. The family Polychrotidae was once thought to encompass all anoles, including those in the genus ''Anolis'' (which are now included in the family Dactyloidae). Studies of the evolutionary relationships of anoles based on molecular information has shown that ''Polychrus'' is not closely related to ''Anolis'', but instead closer to Hoplocercidae Hoplocercidae are a family of lizards native to the tropical forests, woodlands and savanna-like habitats of Central and South America. Alternatively they are recognized as a subfamily, Hoplocercinae. 20 species in three genera are described. Sp .... It is therefore not part of Dactyloidae and instead is treated as the family, Polychrotidae. References Extant Ypresian first appearances Lizard families Extant Eocene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hoplocercidae
Hoplocercidae are a family of lizards native to the tropical forests, woodlands and savanna-like habitats of Central and South America. Alternatively they are recognized as a subfamily, Hoplocercinae. 20 species in three genera are described. Species Family: Hoplocercidae * Genus ''Enyalioides'' ** ''Enyalioides altotambo'' Torres-Carvajal, Venegas, & de Queiroz, 2015 – Alto Tambo woodlizard ** ''Enyalioides anisolepis'' Torres-Carvajal, Venegas, & de Queiroz, 2015 – rough-scaled woodlizard ** ''Enyalioides azulae'' Venegas, Torres-Carvajal, Duran, & de Queiroz, 2013 ** ''Enyalioides binzayedi'' Venegas, Torres-Carvajal, Duran, & de Queiroz, 2013 ** ''Enyalioides cofanorum'' Duellman, 1973 – Cofan woodlizard, Duellman's dwarf iguana ** ''Enyalioides feiruzae'' Venegas, Chávez, García-Ayachi, Duran, & Torres-Carvajal, 2021 ** ''Enyalioides heterolepis'' ( Bocourt, 1874) – Bocourt's dwarf iguana ** '' Enyalioides laticeps'' ( Guichenot, 1855) – broad-hea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleurodonta
Pleurodonta (from Greek '' lateral teeth'', in reference to the position of the teeth on the jaw) is one of the two subdivisions of Iguania, the other being Acrodonta ('' teeth on the top f the jaw'). Pleurodonta includes all families previously split from Iguanidae ''sensu lato'' (Corytophanidae, Crotaphytidae, Hoplocercidae, Opluridae, Polychrotidae, etc.), whereas Acrodonta includes Agamidae and Chamaeleonidae. The name Pleurodonta was first used by paleontologist and herpetologist Edward Drinker Cope in 1864, although he used it in a different sense than it is used today. Because of this difference, the name Iguanoidea has been proposed as a replacement for Pleurodonta in phylogenetic nomenclature. ''Pleurodonta'' is also a synonym of gastropod genus ''Pleurodonte ''Pleurodonte'' is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Pleurodontinae of the family Pleurodontidae. MolluscaBase eds. (2021). MolluscaBase. Pleurodont ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iguanoidea
Pleurodonta (from Greek '' lateral teeth'', in reference to the position of the teeth on the jaw) is one of the two subdivisions of Iguania, the other being Acrodonta ('' teeth on the top f the jaw'). Pleurodonta includes all families previously split from Iguanidae ''sensu lato'' (Corytophanidae, Crotaphytidae, Hoplocercidae, Opluridae, Polychrotidae, etc.), whereas Acrodonta includes Agamidae and Chamaeleonidae. The name Pleurodonta was first used by paleontologist and herpetologist Edward Drinker Cope in 1864, although he used it in a different sense than it is used today. Because of this difference, the name Iguanoidea has been proposed as a replacement for Pleurodonta in phylogenetic nomenclature. ''Pleurodonta'' is also a synonym of gastropod genus ''Pleurodonte ''Pleurodonte'' is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the subfamily Pleurodontinae of the family Pleurodontidae. MolluscaBase eds. (2021). MolluscaBase. Pleurodonte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acrodonta (lizard)
Acrodonta are a subclade of Iguania, iguanian Squamata, squamates consisting almost entirely of Old World taxa. Extant representation include the families Chamaeleonidae (chameleons) and Agamidae (dragon lizards), with at least over 500 species described. A fossil genus, ''Gueragama'', was found in Brazil, making it the only known New World, American representative of the group. The group is eponymously named from their acrodont dentition, whereby the teeth are consolidated with the summit of the alveolar ridge of the jaw without sockets. There are, however, other animals that have acrodont dentition such as tuataras. Systematics Usually acrodonts are divided into two families Chamaeleonidae and Agamidae, there are a few studies that suggest chameleons are nested within Agamidae. In order to maintain the familial status of Chamaeleonidae some authors suggested placing the clades Uromastycinae and Leiolepidinae in a third family Leiolepididae. However a majority of papers concern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
