Basic info Taxonomic history Classification Relationships
Morphology Ecology and taphonomy External Literature Search Age range and collections

Gilmoremys lancensis

Reptilia - Testudines - Trionychidae

Taxonomy
Aspideretes lancensis was named by Gilmore (1916). Its type specimen is USNM 6727, an other (a nearly complete carapace and an isolated hyoplastral fragment), and it is a 3D body fossil. Its type locality is Niobrara County, United States Geological Survey, which is in a Maastrichtian terrestrial horizon in the Lance Formation of Wyoming. It is the type species of Gilmoremys, Aspideretes.

It was recombined as Gilmoremys lancensis by Joyce and Lyson (2011), Vitek and Joyce (2015) and Joyce et al. (2016).

Synonymy list
YearName and author
1916Aspideretes lancensis Gilmore pp. 643-644 figs. Pl. 34-35
2011Gilmoremys lancensis Joyce and Lyson pp. 443-455 figs. 2-12
2015Gilmoremys lancensis Vitek and Joyce
2016Gilmoremys lancensis Joyce et al.

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
RankNameAuthor
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
Testudinata(Oppel 1811)
orderTestudinesBatsch 1788
familyTrionychidaeGray 1825
genusGilmoremys
specieslancensis()

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
W. G. Joyce and T. R. Lyson 2011Gilmoremys lancensis nov. comb. is diagnosed as a representative of Trionychidae by the absence of carapacial and plastral scutes, the absence of peripherals and pygal bones, and sculpturing that covers all metaplastic portions of the shell bones. Gilmoremys lancensis nov. comb. is diagnosed as a representative of Plastomenidae by an extensive secondary palate that is developed through an infolding of the maxillae, an anteroposteriorly elongate mandible, and a contribution of the parietal to the wall of the orbit. The following combination of characters is unique to Gilmoremys lancensis nov. comb.: carapace covered by elongate sinusoidal grooves; preneural present; costal II expands distally at the expense of costal I; neural column lacks reversal; anterior hypoplastra lappet forms minor plastomenid ‘‘shoulder’’; xiphiplastra contact one another along their entire midline length; frontals fuse with one another ventromedially; sulcus olfactorius absent; posterior portion of narial canal defined by bone; anterior portion of maxillary triturating surface with accessory ridges.