Emarginachelys

Emarginachelys cretacea is a turtle belonging to the group Cryptodira, known from well preserved fossils from the Maastrichtian stage of the Late Cretaceous of Montana.[1] Its exact phylogenetic position within Cryptodira is uncertain; different authors considered it to be either the earliest described chelydrid[2][3] or a fossil relative of kinosternoids.[4][5][6]

Emarginachelys
Temporal range:
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Testudines
Suborder: Cryptodira
Clade: Americhelydia
Genus: †Emarginachelys
Whetstone, 1978
Species:
†E. cretacea
Binomial name
†Emarginachelys cretacea
Whetstone, 1978

References
  1. Emarginachelys cretacea, Paleobiology Database
  2. Kenneth N. Whetstone (1978). "A new genus of cryptodiran turtles (Testudinoidea, Chelydridae) from the Upper Cretaceous Hell Creek Formation of Montana". University of Kansas Science Bulletin. 51 (17): 539–563. doi:10.5962/bhl.part.17248.
  3. Georgia E. Knauss; Walter G. Joyce; Tyler R. Lyson; Dean Pearson (2011). "A new kinosternoid from the Late Cretaceous Hell Creek Formation of North Dakota and Montana and the origin of the Dermatemys mawii lineage". Paläontologische Zeitschrift. 85 (2): 125–142. doi:10.1007/s12542-010-0081-x. S2CID 129123961.
  4. Peter A. Meylan; Eugene S. Gaffney (1989). "The skeletal morphology of the Cretaceous cryptodiran turtle, Adocus, and the relationships of the Trionychoidea". American Museum Novitates (2941): 1–60. hdl:2246/5096.
  5. Walter G. Joyce (2016). "A Review of the Fossil Record of Turtles of the Clade Pan-Chelydridae" (PDF). Bulletin of the Peabody Museum of Natural History. 57 (1): 21–56. doi:10.3374/014.057.0103. S2CID 87234846.
  6. Walter G. Joyce; Jason R. Bourque (2016). "A Review of the Fossil Record of Turtles of the Clade Pan-Kinosternoidea" (PDF). Bulletin of the Peabody Museum of Natural History. 57 (1): 57–95. doi:10.3374/014.057.0104. S2CID 87607626.
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