Meyasaurus is an extinct genus of Teiid lizard known from the Barremian of Spain and the Isle of Wight, UK. Four species are known from Spain, from the La Huérguina, Camarillas and La Pedrera de Rúbies Formations while an indeterminate taxon is known from the Wessex Formation of Isle of Wight.[1] It is a possible close relative of Barbatteius[2] and other members of Barbatteiidae.[3]

Temporal range: Barremian 130–125 Ma
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Family: Teiidae
Genus: Meyasaurus
Vidal, 1915
Type species
Meyasaurus faurai
Vidal, 1915

Ilerdaesaurus Hoffstetter, 1966 Rubiessaurus Gomez Pallerola, 1979


  1. ^ English Wealden fossils. Batten, D. J. London: Palaeontological Association. 2011. ISBN 9781444367119. OCLC 777385514.CS1 maint: others (link)
  2. ^ Venczel, Márton; Codrea, Vlad A. (2015). "A new teiid lizard from the Late Cretaceous of the Haţeg Basin, Romania and its phylogenetic and palaeobiogeographical relationships". Journal of Systematic Palaeontology. 14 (3): 219–237. doi:10.1080/14772019.2015.1025869. ISSN 1477-2019.
  3. ^ Codrea, Vlad A.; Venczel, Márton; Solomon, Alexandru (2017). "A new family of teiioid lizards from the Upper Cretaceous of Romania with notes on the evolutionary history of early teiioids". Zoological Journal of the Linnean Society. doi:10.1093/zoolinnean/zlx008. ISSN 0024-4082.

Armandisaurus explorator is an extinct species of iguanid that lived in what is now Santa Fe County, New Mexico, in the Early Middle Miocene period. The fossil specimen is a well-preserved cranium with mandibles and parts of seven cervical vertebrae collected by J. C. Blick in 1940. Fossil evidence suggests that A. explorator was a blunt, medium-sized iguana that grew to about 61 cm (24 in) including its tail.


Barbatteiidae is an extinct family of lizards, endemic to the paleoisland Hațeg Island in the Tethys Ocean during the final stages of the Cretaceous, In what is now Romania. It contains two monotypic genera, Barbatteius and Oardasaurus, alongside some indeterminate material. It appears to be closely related to the Barremian lizard genus Meyasaurus


Calanguban is an extinct genus of scincomorph lizard from the Early Cretaceous of South America. The type species Calanguban alamoi was named in 2014 from the Crato Formation of Brazil and is the oldest known non-iguanian lizard from the continent. It likely had an arboreal lifestyle.


Desertiguana is an extinct genus of lizard in the family Phrynosomatidae. It is a monotypic genus represented by the type species Desertiguana gobiensis from the Late Cretaceous of Mongolia. Desertiguana gobiensis is known from a single left lower jaw.


Distortodon is an extinct genus of Polyglyphanodontid lizard from the Late Cretaceous of Europe, containing the species D. rhomboideus found in the Csehbánya Formation from the Santonian of Hungary. It is distinguished from other Polyglyphanodontids by having a more distal lingual cusp, creating distinctive rhomboidal shape in occlusal view.


Gilmoreteius is an extinct genus of lizard from the Late Cretaceous period in Mongolia.


Hoyalacerta is an extinct genus of lizard known from the type species Hoyalacerta sanzi, which is from the Early Cretaceous Las Hoyas fossil site in Spain. Hoyalacerta was named in 1999 and is considered either a member of the group Iguania or a stem squamate, meaning that it lies outside the squamate crown group that includes all living lizards and snakes. Hoyalacerta is a small lizard with an elongated body and short limbs. It is thought to have spent most of its time on the ground. Several other lizards are also known from Las Hoyas, including Meyasaurus (thought to have lived near the water), Scandensia (thought to be a climber), and Jucaraseps (which, like Hoyalacerta, probably lived on the ground away from water). Features of Hoyalacerta that distinguish it from other Las Hoyas lizards include smooth skull bones, simple cone-shaped teeth, and short limbs relative to body length.


Indiagama is an extinct genus of agamid lizard known from the type species Indiagama gujarata from the early Eocene of India. Indiagama was named in 2013 on the basis of a single lower jaw from the Cambay Formation in Gujarat. The rectangular shape of its teeth distinguish it from all other agamids, living and extinct.


Jucaraseps is an extinct genus of small squamate lizard known from the Early Cretaceous of Las Hoyas, Spain. It contains a single species, Jucaraseps grandipes. It belonged to the clade Scincogekkonomorpha (containing scleroglossan squamates and those taxa which were more closely related to them than to Iguania) and was related to the clade Scleroglossa as well to Jurassic and Cretaceous taxa Eichstaettisaurus, Ardeosaurus, Bavarisaurus, Parviraptor, Yabeinosaurus and Sakurasaurus


Kuwajimalla kagaensis is an extinct species of plant-eating lizard from the Early Cretaceous Kuwajima Formation in Japan. K. kagaensis is the type species.


Oardasaurus (meaning "Oarda de Jos lizard") is an extinct genus of lizard from the latest Cretaceous of Romania. It is a member of the Barbatteiidae, a group of lizards closely related to the Teiidae. At 20 centimetres (7.9 in) in length, it was much smaller than the only other named member of the Barbatteiidae, Barbatteius, which lived slightly later. Like Barbatteius, Oardasaurus can be identified by the presence of a crust of bone deposits, or osteoderms, on the roof of its skull; it differs from Barbatteius in the pattern of the sculpturing on this crust. Both Oardasaurus and Barbatteius lived in the isolated island ecosystem of Hațeg Island, having rapidly diversified into various generalist predators of small prey after their arrival on the island during the Early Cretaceous. They went extinct in the Cretaceous–Paleogene extinction event.


Palaeosaniwa canadensis is an extinct species of carnivorous lizard from the late Cretaceous of North America. The name, given by Charles Whitney Gilmore in 1928, means "ancient Saniwa from Canada".


Paraplacosauriops (near Placosauriops) is an extinct genus of anguid lizards from the middle Eocene of France.


Pedrerasaurus is an extinct genus of scincogekkonomorph lizard from the Early Cretaceous of Spain. The type species is P. latifrontalis. It is similar in appearance to Meyasaurus, a widespread Early Cretaceous lizard that is also known from the Iberian Peninsula. Both genera have bicuspid (two-cusped) teeth, but unlike Meyasaurus, Pedrerasaurus has frontal bones that are not fused or constricted.


Pelsochamops is an extinct genus of Chamopsiid lizard, containing the single species P. infrequens from the Santonian aged Csehbánya Formation of Hungary, known from a partial dentary and maxilla fragments. It is the first Chamopsiid known from Europe, the rest being known from North America.


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. It is therefore not part of Dactyloidae and instead is treated as the family, Polychrotidae.


Polyglyphanodon is an extinct genus of Polyglyphanodontid lizard containing the species P. sternbergi from the Maastrichtian aged North Horn Formation of Utah. The species is known from several mostly complete and partial skeletons. It is distinguished by its transversely orientated interlocking teeth, which suggest a herbivorous diet


Ptilotodon is an extinct genus of teiid lizard from the Early Cretaceous of Oklahoma. The type and only known species is Ptilotodon wilsoni, named in 2002 on the basis of a single lower jaw with four teeth found in the Antlers Formation. The small size of the specimen may be an indication that it belonged to a juvenile.


Suratagama is an extinct genus of agamid lizard known from the type species Suratagama neeraae from the early Eocene of India. It was named in 2013 on the basis of three isolated jaw bones from the Cambay Formation in Gujarat.

Extinct squamate genera

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