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.[1] 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.[2] Phylogenetic analysis indicates that among gobiguanians, Anchaurosaurus is most closely related to Zapsosaurus from Mongolia. Below is a cladogram from Daza et al. (2012) showing the phylogenetic relationships of Anchaurosaurus:[3]
Iguania
†Hoyalacerta sanzi
†Huehuecuetzpalli mixtecus
†Pristiguana brasiliensis
Chamaeleontiformes
†Priscagamidae
Acrodonta
Iguanoidea (=Pleurodonta)
Silvaiguana
Hoplocercidae
Polychrotidae
†Gobiguania
†Polrussia mongoliensis
†Igua minuta
†Isodontosaurus gracilis
†Anchaurosaurus gilmorei
†Zapsosaurus sceliphros
†Saichangurvel davidsoni
†Temujinia ellisoni
†Ctenomastax parva
Euiguana
Corytophanidae
Terraiguana
Iguanidae
Crotaphytidae
Phrynosomatidae
Opluridae
†Uquiasaurus
Liolaemidae
Leiocephalus
Tropiduridae
^Conrad, J. L.; Norell, M. A. (2007). "A Complete Late Cretaceous Iguanian (Squamata, Reptilia) from the Gobi and Identification of a New Iguanian Clade". American Museum Novitates (3584): 1. doi:10.1206/0003-0082(2007)3584[1:ACLCIS]2.0.CO;2. hdl:2246/5877.
^Keqin, Gao; Lianhai, Hou (1995). "Iguanians from the Upper Cretaceous Djadochta Formation, Gobi Desert, China". Journal of Vertebrate Paleontology. 15 (1): 57–78. Bibcode:1995JVPal..15...57K. doi:10.1080/02724634.1995.10011207.
^Daza, J. D.; Abdala, V.; Arias, J. S.; García-López, D.; Ortiz, P. (2012). "Cladistic Analysis of Iguania and a Fossil Lizard from the Late Pliocene of Northwestern Argentina". Journal of Herpetology. 46: 104–119. doi:10.1670/10-112. hdl:11336/61054. S2CID 85405843.
Anchaurosaurus (meaning "morning lizard" in Latin) is an extinct genus of iguanian lizard from the Late Cretaceous of Inner Mongolia, China. It belongs...
Conrad and Mark Norell in 2007 as all taxa more closely related to Anchaurosaurus gilmorei than to Iguana iguana (the green iguana), Crotaphytus collaris...
elongatus A genus of fossil snakes in the extinct family of Madtsoiidae. †Anchaurosaurus Djadochta Formation, Gobi Desert, Mongolia An iguanian lizard in the...
Global Information