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Cimolestes
''Cimolestes'' ("Bug Thief") 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.
==Misassigned species==
Three nominal species of ''Cimolestes'', ''C. magnus'', ''C. cerberoides'', and ''C. propalaeoryctes'', have been re-assigned to their own genera, ''Altacreodus'', ''Ambilestes'', and ''Scollardius'', respectively.〔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〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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