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Reiszorhinus olsoni

Reptilia - Captorhinidae

Taxonomy
Reiszorhinus olsoni was named by Sumida et al. (2010). Its type specimen is FMNH UC 183, a partial skull, and it is a 3D body fossil. Its type locality is Mitchell Creek, 29 (Waggoner Ranch Formation), which is in an Artinskian/Kungurian terrestrial limestone/shale in the Waggoner Ranch Formation of Texas. It is the type species of Reiszorhinus.

Synonymy list
YearName and author
2010Reiszorhinus olsoni Sumida et al. p. 705 figs. 1-4

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
phylumChordataHaeckel 1847
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
Sarcopterygii
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda()
RankNameAuthor
Reptiliomorpha
Anthracosauria
Batrachosauria()
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
familyCaptorhinidae
genusReiszorhinus
speciesolsoni

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
S. S. Sumida et al. 2010Relatively large captorhinid reptile with single row of recurved, labiolingually compressed maxillary and dentary teeth, and extremely large meckelian foramen on the lingual surface of the lower jaw, and relatively large splenial (approximately two-thirds the length of the mandible). Further distinguished from Romeria, Rhiodenticulatus, Protocaptorhinus, and Saurorictus by significantly greater size, presence of a postparietal-supratemporal contact, and a horn-like process of the supratemporal. Further distinguished from Saurorictus by its more robust teeth, more extremely recurved teeth, and retention of supratemporal. Further distinguished from Labidosaurus by having a relatively narrower skull table and lack of ‘heart-shaped outline’ in dorsal aspect. Further distinguished from more derived captorhinds by its primitive retention of a single rows of maxillary and dentary teeth.