Nyssodon Simpson 1927
Cimolestes ("Cretaceous robber") is a genus of basal, non-placental eutherians. Fossils have been found in North America, where they first appeared during the Late Cretaceous; they died out at the start of the Paleocene.
They were once considered to be marsupials, then primitive placental mammals, but now are considered to be members of the order Cimolesta (which was named after the genus), outside of placental mammals proper. Before they were determined to be non-placental eutherians, the cimolestids were once considered the common ancestral group of the clades Carnivora and the extinct Creodonta.
Fossils of Cimolestes have been found in:
- United States
- Hainin Formation, Belgium
- Santa Lucía Formation (Tiupampan), Bolivia
- Ravenscrag and Frenchman Formations, Saskatchewan, Canada
- Jbel Guersif Formation, Morocco
- United States (Puercan)
- Palmer, T.S. (1904). "Index Generum Mammalium: a List of the Genera and Families of Mammals". North American Fauna. 23: 189. Retrieved 2019-07-21.
- McKenna, M. C; S. K. Bell (1997). Classification of Mammals Above the Species Level. Columbia University Press. ISBN 978-0-231-11012-9.
- Rook, D.L.; Hunter, J.P. (2013). "Rooting Around the Eutherian Family Tree: the Origin and Relations of the Taeniodonta". Journal of Mammalian Evolution. 21: 1–17. doi:10.1007/s10914-013-9230-9.
- Richard C. Fox (2015) A revision of the Late Cretaceous–Paleocene eutherian mammal Cimolestes Marsh, 1889. Canadian Journal of Earth Sciences (advance online publication) doi: 10.1139/cjes-2015-0113 http://www.nrcresearchpress.com/doi/abs/10.1139/cjes-2015-0113?src=recsys#.VkAcsrerTcs
- Cimolestes at Fossilworks.org
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