Mammalia - Multituberculata - Neoplagiaulacidae
Synonyms: Ectypodidae Sloan and Van Valen 1965, Ectypodontidae Sloan and Van Valen 1965
Full reference: F. Ameghino. 1890. Los plagiaulácidos Argentinos y sus relaciones zoológicas, geológicas y geográficas. Boletín del Instituto Geográfico Argentino 11:143-208
Parent taxon: Ptilodontoidea according to Z. Kielan-Jaworowska and J. H. Hurum 2001
See also Beard and Dawson 2014, Clemens and Kielan-Jaworowska 1979, Gazin 1969, Kielan-Jaworowska 1969, Kielan-Jaworowska 1970, Kielan-Jaworowska et al. 2004, Lillegraven and McKenna 1986, Rose et al. 2012 and Sloan and Van Valen 1965
Sister taxa: Cimolodontidae, Neoliotomus, Ptilodontidae
Subtaxa: Cernaysia Ectypodus Filikomys Krauseia Mesodma Mesodmops Mimetodon Neoplagiaulax Nidimys Parectypodus Parikimys Xanclomys Xyronomys
Ecology: arboreal omnivore
Distribution:
• Eocene of Belgium (2 collections), Canada (7: Northwest Territories, Nunavut, Saskatchewan), China (1), France (3), the United Kingdom (2), United States (73: California, Colorado, Montana, Nebraska, New Mexico, North Dakota, Wyoming)
• Clarkforkian of United States (11: Wyoming)
• Paleocene to Eocene of United States (1: Wyoming)
• Paleocene of Canada (26: Alberta, Saskatchewan), China (2), France (2), United States (112: California, Colorado, Montana, New Mexico, North Dakota, Texas, Utah, Wyoming)
• Cretaceous of Canada (20: Alberta, Saskatchewan), Mexico (1), United States (95: Colorado, Montana, New Mexico, North Dakota, South Dakota, Texas, Utah, Wyoming)
Total: 358 collections including 616 occurrences