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Hutchemys acupictus

Reptilia - Testudines

Taxonomy
Plastomenus acupictus was named by Hay (1907). Its type specimen is AMNH 1025, a partial shell (costals, hypoplastron, and xiphiplastron), and it is a 3D body fossil. Its type locality is Neighbourhood of Chaco Cañon Hoplochelys crassa (Chelydra crassa) type locality, which is in a Torrejonian/Puercan terrestrial horizon in the Nacimiento Formation of New Mexico.

It was recombined as Derrisemys acupictus by Hutchison (2009); it was recombined as Hutchemys acupictus by Vitek and Joyce (2015).

Synonymy list
YearName and author
1907Plastomenus acupictus Hay p. 852 figs. plate 54, figs 1-3; text-fig. 8
1908Plastomenus acupictus Hay p. 470 fig. 629
1986Plastomenus acupictus Sullivan and Lucas p. 204
2009Derrisemys acupictus Hutchison
2015Hutchemys acupictus Vitek and Joyce

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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
suborderCryptodira
suborderTrionychia
PantrionychidaeJoyce et al. 2004
Plastomenidae()
genusHutchemys
speciesacupictus()

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
J. H. Hutchison 2009Hypoplastron bridge relatively narrow and
inguinal notch wide; xiphiplastron distinctly shorter than
wide; hyo-hypoplastral suture angles anteriorly near the
bridge; hyo-xiphiplastral suture convex posteriorly; dorsal
surface of C6–8 without shelf-like projection over the ventral
surface at the distal margins.