The type species is "Cimolestes" magnus, which was renamed Altacreodus magnus in 2015.[1] Recent phylogenetic analyses suggests that genus Altacreodus is a member of clade
Pan-Carnivora and the closest known sister taxon to genus Tinerhodon and the order
Hyaenodonta,[3][4][5] based on anatomy of its teeth.[1] In some studies its position as a crown-group placental has been equivocal.[6]
References
^
abcdRichard C. Fox (2015). "A revision of the Late Cretaceous–Paleocene eutherian mammal Cimolestes (Marsh, 1889)". Canadian Journal of Earth Sciences. 52 (12): 1137–1149.
Bibcode:
2015CaJES..52.1137F.
doi:
10.1139/cjes-2015-0113.
^Clemens, W. A. Jr. and Russell, L. S. (1965.) "Mammalian fossils from the upper Edmonton Formation." University of Alberta Geology Bulletin, 2: 32–40.