Emarginachelys

Emarginachelys; Temporal range: Maastrichtian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
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

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]

References[]

^ Emarginachelys cretacea, Paleobiology Database
^ 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.
^ 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.
^ 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.
^ 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.
^ 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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[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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