Emarginachelys Explained

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]}

Notes and References

1. http://paleobiodb.org/cgi-bin/bridge.pl?a=checkTaxonInfo&taxon_no=172850&is_real_user=0 Emarginachelys cretacea
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 . 10.5962/bhl.part.17248 . free .
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 . 10.1007/s12542-010-0081-x . 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 . 2246/5096 .
5. Walter G. Joyce . 2016 . A Review of the Fossil Record of Turtles of the Clade Pan-Chelydridae . Bulletin of the Peabody Museum of Natural History . 57 . 1 . 21–56 . 10.3374/014.057.0103 . 87234846 .
6. Walter G. Joyce . Jason R. Bourque . 2016 . A Review of the Fossil Record of Turtles of the Clade Pan-Kinosternoidea . Bulletin of the Peabody Museum of Natural History . 57 . 1 . 57–95 . 10.3374/014.057.0104 . 87607626 .