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Pachyophis

Reptilia - Squamata - Pachyophiidae

Synonymy list
YearName and author
1923Pachyophis Nopcsa
1988Pachyophis Carroll
1999Pachyophis Lee et al. p. 510
2002Pachyophis Lee and Scanlon p. 136

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
RankNameAuthor
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Lepidosauromorpha(Benton 1983)
superorderLepidosauria()
orderSquamata
suborderOphidia(Latreille 1804)
superfamilyCholophidia(Nopcsa 1923)
familyPachyophiidae(Nopcsa 1923)
genusPachyophis

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
M. S. Y. Lee et al. 1999An elongated, limb-reduced marine squamate with a small skull and slender neck. Forelimb and shoulder girdle are absent, presence of hindlimb and pelvis cannot be con®rmed. Very similar to the closely related Pachyrhachis problematicus. However, it is smaller, and has a greater development of pachyostosis in the mid- dorsal ribs and vertebrae. In this region, the proximal and middle portions of the ribs are very thick, such that the intercostal space is almost obliterated. The distal ends of the ribs are round rather than ̄at in cross- section. Based on the rib morphology, the body appears to be more laterally compressed. The neural arches and bases of the neural spines are more swollen. There are also differences in the dentition: although smaller, Pachyophis has many more teeth on the dentary (approx. 23) than Pachyrhachis (12). The other tooth- bearing elements are not preserved in Pachyophis and comparisons cannot be made.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Created: 2017-04-17 15:16:03
Modified: 2017-04-17 15:16:03
Source: subc = subclass, c = class, subp = subphylum
References: Kiessling 2004, Carroll 1988, Hendy et al. 2009

Age range: Cenomanian or 100.50000 to 93.90000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Cenomanian100.5 - 93.9Bosnia and Herzegovina (Herzegovina) P. woodwardi (53519)