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Axestemys cerevisia

Reptilia - Testudines - Trionychidae

Taxonomy
Axestemys cerevisia was named by Vitek (2012). Its type specimen is UW 2382, a set of postcrania (a carapace, plastron, partial pectoral and pelvic girdles, and one cervical vertebrae), and it is a 3D body fossil. Its type locality is NE of Opal, UW locality V-65004 (V65004, V.65004), which is in a Bridgerian terrestrial horizon in the Bridger Formation of Wyoming.

Synonymy list
YearName and author
2012Axestemys cerevisia Vitek pp. 19-22 figs. 7.11, 12, 13
2015Axestemys cerevisia Vitek and Joyce

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
RankNameAuthor
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
—Testudinata(Oppel 1811)
orderTestudinesBatsch 1788
suborderCryptodira
familyTrionychidaeGray 1825
subfamilyTrionychinaeGray 1825
genusAxestemys
speciescerevisia

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.

†Axestemys cerevisia Vitek 2012
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Diagnosis
ReferenceDiagnosis
N. S. Vitek 2012Axestemys cerevisia can be diagnosed as a member of Axestemys by a maximum known carapace length of 97 cm, presence of a preneural, and a single lateral hyoplastral process. Axestemys cerevisia can be differentiated from other member of Axestemys by a wide, smooth border of the carapacial callosity, open suprascapular fontanelles with no suture between the posterolateral edge of nuchal and the first costals, smooth and reduced hyoplastral-hypoplastral callosities, and absence of xiphiplastral callosities.
Measurements
No measurements are available
Composition: phosphaticsubp
Body part: carapacef
Adult length: 100 to < 1000f
Grouping: solitaryf
Environment: brackish, freshwaterf
Locomotion: actively mobilef
Life habit: aquaticf
Diet: piscivoref
Diet 2: carnivoref
Reproduction: oviparousf
Created: 2005-08-25 13:24:04
Modified: 2005-09-09 19:45:41
Source: f = family, subp = subphylum
References: Carroll 1988, Ernst and Barbour 1989

Age range: Bridgerian or 50.30000 to 46.20000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Bridgerian50.3 - 46.2USA (Wyoming) Trionychidae indet. (type locality: 141584)