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Oxia karakalpakensis

Reptilia

Taxonomy
Oxia karakalpakensis was named by Nessov (1985). Its type specimen is TsNIGR 28/12000, a mandible (a nearly complete dentary with 13 teeth and the bases of 8 others), and it is a 3D body fossil. Its type locality is SH-20, Khodzhakul, which is in a Cenomanian coastal sandstone/claystone in the Khodzhakul Formation of Uzbekistan. It is the type species of Oxia.

Synonymy list
YearName and author
1985Oxia karakalpakensis Nessov p. 209 figs. Pl. 1:1-2
1998Oxia karakalpakensis Gao and Nessov

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
—Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
RankNameAuthor
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
—Squamata()
suborderLacertilia(Owen 1842)
genusOxia
specieskarakalpakensis

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.

†Oxia karakalpakensis Nessov 1985
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Diagnosis
ReferenceDiagnosis
K. -Q. Gao and L. A. Nessov 1998Oxia karakalpakensis is distinguished from other members of the family Xenosauridae in having more conspicuous subdental shelf, weakly heterodont dentition, and having weak striations on medial surface of crowns. Distinguished from Shinsaurus by having heterodont teeth with weakly striated crowns, much stronger subdental shelf, and well-defined gap between basal line of tooth row and dorsal edge of subdental shelf. Distinguished from Xenosaurus and its related fossil taxon Exostinus by having medial extension of teeth shaft and somewhat chisel-shaped crowns with anteroposteriorly oriented cutting edge.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialuc
Locomotion: actively mobilec
Created: 2017-04-17 15:15:35
Modified: 2017-04-17 15:15:35
Source: c = class, subp = subphylum, uc = unranked clade
References: Carroll 1988, Hendy et al. 2009

Age range: Early/Lower Cenomanian or 99.60000 to 93.50000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Early/Lower Cenomanian99.6 - 93.5Uzbekistan (Navoi) Oxia karakalpakensis (type locality: 58208)