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Xihaina

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Extinct genus of lizards

Xihaina
Temporal range: Late Cretaceous
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Iguania
Clade: Pleurodonta
Genus: Xihaina
Gao and Hou, 1995
Type species
Xihaina aquilonia
Gao and Hou, 1995

Xihaina is an extinct genus of iguanian lizard from the Late Cretaceous of Inner Mongolia, China. The type species Xihaina aquilonia was named in 1995 from the Djadochta Formation and is known from a partial skeleton that preserves parts of the skull, most of the vertebral column, the pelvis, and the right hind limb. The incomplete nature of this specimen makes the classification of Xihaina difficult; it has never been incorporated into a phylogenetic analysis, but it shares similarities with a group of Late Cretaceous Mongolian lizards called Gobiguania, particularly the gobiguanian genera Anchaurosaurus and Polrussia. The fact that many skeletal elements are missing yet the rest of the skeleton is articulated suggests the individual may have been partially eaten by a predator or scavenger and then rapidly buried soon after.

References

  1. ^ Keqin, Gao; Lianhai, Hou (1995). "Iguanians from the Upper Cretaceous Djadochta Formation, Gobi Desert, China". Journal of Vertebrate Paleontology. 15: 57. doi:10.1080/02724634.1995.10011207.
  2. Alifanov, V. R. (2013). "Desertiguana gobiensis gen. et sp. nov., a new lizard (Phrynosomatidae, Iguanomorpha) from the Upper Cretaceous of Mongolia". Paleontological Journal. 47 (4): 417–424. doi:10.1134/S0031030113040023.
Extinct squamate genera
Iguania
Acrodonta
Agamidae
Pleurodonta / Iguanoidea
Corytophanidae
Gobiguania
Iguanidae
Phrynosomatidae
Other extinct iguanians
Arretosauridae
Priscagamidae
Armandisaurus explorator
Polyglyphanodontia / Borioteiioidea
Chamopsiidae
Gilmoreteiidae / "macrocephalosaurines"
"Polyglyphanodontines"
Other polyglyphanodontians
Stem Scincogekkonomorpha
Scincogekkonomorpha
Scleroglossa
Gekkonomorpha
Gekkota
Stem Autarchoglossa
(Evansauria)
Bainguidae?
Scincomorpha
Cordyloidea
Lacertoidea
Amphisbaenia
Amphisbaenidae
Bipedidae
Blanidae
Chthonophidae
Rhineuridae
Polyodontobaenidae
Contogeniidae
Lacertidae
Teiidae
Barbatteiidae
Xantusiidae
Scincoidea
Scincidae
Other scincomorphs
Paramacellodidae
Anguimorpha
Basal anguimorphs
Mosasauroidea?
Neoanguimorpha
Carusioidea
Xenosauridae
Anguidae
Anguinae
Diploglossinae
Gerrhonotinae
Glyptosaurinae
Paleoanguimorpha
Basal varanoids / platynotans
Shinisauria?
Goannasauria
Basal Goannasaurians
Varanoidea
Lanthanotidae
Varanidae
Other platynotans / varanoids
Aigialosaurus dalmaticus

Plioplatecarpus primaevus Estesia mongoliensis Telmasaurus grangeri

Varanus priscus
Ophidia
Indeterminate squamates
Taxon identifiers
Xihaina


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