Ptilodontidae is a family of fossil mammals within the extinct order Multituberculata. Representatives are known from the Upper Cretaceous and Paleocene of North America.
Taxon: Ptilodontidae (Cope ED, 1887) Gregory & Simpson, 1926
Page reference: Page reference: Kielan-Jaworowska Z & Hurum JH (2001), Phylogeny and Systematics of multituberculate mammals. Paleontology 44, p.389-429.
(This information has been derived from [1] (http://home.arcor.de/ktdykes/ptilodon.htm) MESOZOIC MAMMALS; Ptilodontoidea, an internet directory. As that's my webpage, there are no issues of copyright. Trevor Dykes)
Ptilodontidae
Scientific classification
Kingdom: Animalia
Therapsida
Class: Mammalia
Order: Multituberculata
Family: Ptilodontidae Genera
Ptilodus
Baiotomeus
Kimbetohia
Prochetodon
Ref.
For the technically minded, this family is part of the suborder of Cimolodonta, within the superfamily of Ptilodontoidea.
Remarks: This grouping has also been seen as a subfamily; Ptilodontinae (Cope, 1887). Chirogidae Cope ED, 1887 is a synonym. Despite Cope's original title, Chirox, a synonym of Ptilodus, was no more a marsupial than I am. It was much more distantly related.
Reference: Cope ED, (1887), The marsupial genus Chirox. American Naturalist, 21, p.566-567.