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Bairdemys sanchezi

Reptilia - Testudines

Discussion

For Marcelo R. Sanchez-Villagra in recognition of his contributions to Bairdemys systematics and for his paleontological explorations in Venezuela.

Taxonomy
Bairdemys sanchezi was named by Gaffney et al. (2008). Its type specimen is AMU-CURS 186, a partial skeleton (Skull, jaws, and anterior plastral fragment), and it is a 3D body fossil. Its type locality is Tio Gregorio, which is in a Miocene fluvial-deltaic claystone in the Urumaco Formation of Venezuela.

Synonymy list
YearName and author
2008Bairdemys sanchezi Gaffney
2008Bairdemys sanchezi Gaffney et al.
2010Bairdemys sanchezi Sanchez-Villagra and Scheyer
2013Bairdemys sanchezi Weems and Knight p. 290
2014Bairdemys sanchezi de la Fuente et al.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
RankNameAuthor
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
Testudinata(Oppel 1811)
orderTestudinesBatsch 1788
suborderPleurodira
superfamilyPelomedusoidesBroin 1988
superfamilyPodocnemidoidea
Podocnemidae()
subtribeStereogenyina
genusBairdemys
speciessanchezi

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Diagnosis
ReferenceDiagnosis
E. S. Gaffney et al. 2008A species of Bairdemys differing from all other Bairdemys species in having a low triturating surface convexity and shallow triturating surface concavity, a smaller basisphenoid acutely pointed anteriorly, a small skull, and an extensive cheek and temporal emar- gination; also differs from B. hartsteini in having a con- vex rather than straight labial ridge in ventral view; also differs from B. venezuelensis in having a long midline pterygoid contact and a premaxillary notch, and also differs from B. winklerae in having a short, broad snout with a convex labial ridge in ventral view, a premaxil- lary notch, and a triturating surface that is narrower anteriorly and wider posteriorly.