Neoplagiaulacidae

Neoplagiaulacidae is a family of fossil mammals within the extinct order Multituberculata. Remains are known from the Upper Cretaceous until the Eocene. Representatives have been found in North America, Europe and Asia.
Neoplagiaulacinae Ameghino, 1890 has been seen as a sub-family within Ptilodontidae Cope, 1887, (McKenna & Bell, 1997). More recent thinking has it as a family. Synonyms are Ectypodidae Sloan & Van Valen, 1965 and Ectypodontidae Sloan & Van Valen, 1965. Most fossils are restricted to teeth.
For the technically minded, this family is part of the suborder of Cimolodonta, within the superfamily of Ptilodontoidea.

Taxon: Neoplagiaulacidae Ameghino F, 1890
Reference: Ameghino (1890), Los plagiaulácidos Argentinos y sus relaciones zoológicas, geológicas y geográficas. Boletin del Instituto Geográfico Argentino, 11, p.143-208.

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)