Taxonavigation

Taxonavigation: Trionychoidea 

Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Cladus: Craniata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Division: Archelosauria
Division: Pan-Testudines
Division: Testudinata
Ordo: Testudines
Subordo: Cryptodira
Superfamilia: Trionychoidea

Familia: Trionychidae
Subfamilia: Trionychinae
Genus: †Axestemys
Species: Axestemys montinsana

Name

  • †Axestemys montinsana Vitek, 2012: 28, figs. 7-12
    • Holotype: UM 27029, a skull, partial lower jaw, partial carapace, fragmentary entoplastron, hyoplastron, and hypoplastron, xiphiplastron, five cervical vertebrae, a partial pelvic girdle, two humeri, a femur, and various disarticulated appendicular elements.
    • Type locality: Scarritt Quarry, (early Tiffanian, Ti2) Melville Formation, eastern Crazy Mountains Basin, Montana, USA. Discovered by E. Robinson, collected by D. R. Krause 1985 (pers. comm. D.R. Krause 2011; Scott and Krause 2006).
Etymology: Mont-, Latin for ‘mountain,’ and insana, Latin for ‘crazy,’ in reference to the Crazy Mountains Basin in which the type specimen was discovered.

Mentions

  • Axestemys cf. A. puercensis: Hutchison and Holroyd 2003: 133, fig. 7F, H-I, 11A-D.

References

  • Vitek Natasha, S., 2012: Giant fossil soft-shelled turtles of North America. Palaeontologia Electronica, 15(Issue 1, Article 13A): 1–43.
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