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{{Short description|Extinct genus of reptiles}}
{{Automatic taxobox
| fossil_range = [[Late Triassic]], {{fossil_range|Carnian|Norian}}▼
| image =
| image_caption =
| authority = [[José Bonaparte|Bonaparte]] ''et al.'' [[2010 in paleontology|2010]]
| type_species = {{extinct}}'''''Cargninia enigmatica'''''
| infraclassis = [[Lepidosauromorpha]]▼
▲| genus = '''''Cargninia'''''
▲| genus_authority = Bonaparte ''et al.'', 2010
}}
'''''Cargninia''''' is an [[extinct]] [[genus]] of [[basal (phylogenetics)|basal]] [[
The preserved dentary has small, peg-like teeth, with the underlying jaw bone about four times deeper than the height of each tooth crown. The jaw was originally collected with eleven preserved teeth and two or three more spaces for broken teeth. However, during preparation the front half of the fossil was destroyed, leaving only the rear part of the jaw with five preserved teeth and one or two empty spaces. Up to 20 teeth may have been present in a complete lower jaw. The teeth are positioned apicolingually (slightly inwards of the upper edge of the jaw bone). The penultimate tooth in the back of the jaw has a higher attachment point and its base is cemented to the jaw bone. The jaw as a whole can be characterized as having [[Pleurodont|pleuro]][[acrodont]] tooth implantation.<ref name=":0">{{Cite journal |last1=Romo De Vivar |first1=Paulo R. |last2=Martinelli |first2=Agustín G. |last3=Fonseca |first3=Pedro Henrique M. |last4=Soares |first4=Marina Bento |date=2020-07-03 |title=To be or not to be: The Hidden Side of ''Cargninia Enigmatica'' and Other Puzzling Remains of Lepidosauromorpha from the Upper Triassic of Brazil |url=https://doi.org/10.1080/02724634.2020.1828438 |journal=Journal of Vertebrate Paleontology |volume=40 |issue=4 |pages=e1828438 |doi=10.1080/02724634.2020.1828438 |bibcode=2020JVPal..40E8438R |s2cid=227249876 |issn=0272-4634}}</ref>
==References==▼
{{Portal|Paleontology}}▼
''Cargninia'' was originally described as a [[Lepidosauria|lepidosaur]] ([[Crown group|crown-group]] lepidosauromorph), possibly related to the gliding [[Kuehneosauridae|kuehneosaurids]].<ref name="BonaparteFauna" /> A 2020 redescription later considered it a valid, albeit fragmentary, lepidosauromorph with uncertain relations to other members of the group. Its pleuroacrodont dentition is similar to ''[[Gephyrosaurus]]'' (a basal [[Rhynchocephalia|rhynchocephalian]]) and ''[[Gueragama]]'' (a basal [[Acrodonta (lizard)|acrodontan]] [[Squamata|squamate]]), which are each early members of major lepidosaur lineages with acrodont dentition. In the absence of more data, ''Cargninia''<nowiki/>'s condition is considered to be a case of [[homoplasy]] ([[convergent evolution]]).<ref name=":0" /> Several additional pleuroacrodont jaw fragments are known from Faxinal do Soturno, though a lack of overlap prevents an unambiguous referral to ''Cargninia''.<ref name=":0" />
[[Category:Paleorrota]]▼
[[Category:Lepidosaurs]]▼
▲== References ==
[[Category:Triassic reptiles]]▼
{{Reflist}}
[[Category:Prehistoric reptiles of South America]]▼
▲{{Portal|Brazil|Paleontology|Reptiles}}
{{Taxonbar|from=Q5039261}}
▲[[Category:Late Triassic reptiles of South America]]
[[Category:Fossils of Brazil]]
[[Category:Fossil taxa described in 2010]]
[[Category:Taxa named by José Bonaparte]]
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