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From Wikipedia, the free encyclopedia

Uquiasaurus
Temporal range: Late Pliocene (Uquian)
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Iguania
Clade: Pleurodonta
Genus: Uquiasaurus
Daza et al., 2012
Type species
Uquiasaurus heptanodonta
Daza et al., 2012

Uquiasaurus is an extinct genus of iguanian lizards represented by the type species Uquiasaurus heptanodonta from the Late Pliocene of Argentina. Uquiasaurus was first described in 2012 on the basis of isolated snout and jaw bones within the Uquía Formation, the namesake of the genus. These bones were preserved in a midden of predatory bird pellets and are part of a microvertebrate assemblage that includes the bones of rodents, marsupials, frogs, birds, and other lizards, one of the few to document the mixing of North and South American faunas during the Great American Interchange. Phylogenetic analysis indicates that Uquiasaurus is part of a clade (evolutionary grouping) of iguanians that includes the living families Liolaemidae, Leiocephalidae, and Tropiduridae.[1] The status of U. heptanodonta as a valid taxon was contested by Scanferla & Díaz-Fernández (2023), who reinterpreted the type series of this species as a fossil bone assemblage composed by more than one species of Liolaemus.[2] Below is a cladogram from Daza et al. (2012) showing its phylogenetic relationships:[1]

Taxonomy

Iguania

References

  1. ^ a b 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.
  2. ^ Scanferla, A.; Díaz-Fernández, L. (2023). "Reassessment of Uquiasaurus heptanodonta, an iguanian lizard from the late Pliocene (Uquía Formation) of NW Argentina". Ameghiniana. 60 (6): 535–539. doi:10.5710/AMGH.01.09.2023.3577.


This page was last edited on 7 November 2023, at 04:32
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