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Hutchemys

Reptilia - Testudines

Synonyms
Synonymy list
YearName and author
1908Aspideretes nassau Hay p. 499 figs. Text-fig. 653
2009Derrisemys Hutchison
2009Plastomenoides Hutchison
2009Hutchemys Joyce et al.
2013Derrisemys Hutchison et al.
2015Hutchemys Vitek and Joyce

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
RankNameAuthor
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
Testudinata(Oppel 1811)
orderTestudinesBatsch 1788
suborderCryptodira
suborderTrionychia
PantrionychidaeJoyce et al. 2004
Plastomenidae()
genusHutchemys

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 2009 (Plastomenoides)Small to moderately large size; plastron without
post-entoplastral fontanelles in adults; hyoplastron, hypoplastron
and xiphiplastron rigidly sutured and completely
calloused ventrally; epiplastron subtriangular with short but
distinct lateral arm, epiplastron well calloused; entoplastron
transversely elongate with a relatively straight anterior margin,
calloused, recessed into hyoplastra and sutured to hyoplastra
laterally and posteriorly in adults; interclavicular alae inserted
into grooves on the dorsal side of the hyoplastra; hyoplastron
tapers laterally to a single point and expanded anteriorly to
enclose the lateral margin of the entoplastron; peripheral ossifications
apparently absent in mature adults; pelvis extending
beyond the bony confines of the carapace; carapace broadly
domed and oval to subrectangular; eight costals that thicken
and terminate abruptly; rib ends compressed, short and may
not extend beyond the costal margins; C8 moderate in size;
nuchal not smoothly contiguous with costal margins and
marked by a small spur or distinct change in angle near the
suture; nuchal wide and shallow and distinctly emarginate;
preneural present or absent.