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Orenburgia enigmaticus

Reptilia - Procolophonidae

Taxonomy
Tichvinskia enigmatica was named by Chudinov and Vjushkov (1956). Its type specimen is PIN 1043/1, a mandible (damaged left dentary), and it is a 3D body fossil. Its type locality is Lipovskaya gully (Donskaya Luka), which is in an Olenekian terrestrial horizon in the Lipovskaya Formation of the Russian Federation.

It was recombined as Orenburgia enigmaticus by Spencer and Benton (2000); it was recombined as Orenburgia enigmatica by Ivakhnenko (1975), Ivakhnenko (1976), Novikov (1991) and Ivakhnenko (2008).

Synonymy list
YearName and author
1956Tichvinskia enigmatica Chudinov and Vjushkov p. 549 fig. 4
1975Orenburgia enigmatica Ivakhnenko p. 92
1976Orenburgia enigmatica Ivakhnenko p. 89
1991Orenburgia enigmatica Novikov pp. 74, 76 figs. 2a, b
2000Orenburgia enigmaticus Spencer and Benton p. 171 figs. 9.10A, B
2008Orenburgia enigmatica Ivakhnenko

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
Reptiliomorpha
Anthracosauria
RankNameAuthor
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassParareptilia
Procolophonomorpha()
Procolophonia()
superfamilyProcolophonoidea
familyProcolophonidae
subfamilyProcolophoninae
genusOrenburgia
speciesenigmaticus()

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
P. K. Chudinov and B. P. Vjushkov 1956Translated [7 teeth in lower jaw. No. 1 and 2 large and almost round in cross section. Tooth no. 3 is considerably smaller, transversally expanded and double-tipped. tooth no. 4 is the largest, with a base diameter equal to the second one. Teeth 5-7 successively smaller. Branches of the lower jaw form an angle of about 78-79°.]
I. V. Novikov 1991Translated: [Maximum height of dentary (on a level with fifth molariform) is three times higher than the largest (the second one) molariform. Relatively few molariforms.]