Mammalia - Multituberculata - Microcosmodontidae
Alternative spelling: Microcosmodontinae
Parent taxon: Cimolodonta according to Z. Kielan-Jaworowska and J. H. Hurum 2001
See also Clemens and Kielan-Jaworowska 1979, Kielan-Jaworowska et al. 2004 and Scott et al. 2006
Sister taxa: Boffiidae, Bryceomys, Cedaromys, Cimexomys, Cimolomyidae, Corriebaataridae, Dakotamys, Djadochtatherioidea, Eucosmodontidae, Kogaionidae, Paracimexomys, Ptilodontoidea, Taeniolabidoidea, Uzbekbaatar, Viridomys, Yubaatar
Subtaxa: Acheronodon Allocosmodon Alopocosmodon Microcosmodon Pentacosmodon
Type: Microcosmodon
Ecology: arboreal herbivore
Distribution:
• Clarkforkian of United States (9: Wyoming collections)
• Paleocene of Canada (9: Alberta, Saskatchewan), United States (17: California, Montana, North Dakota, Wyoming)
Total: 35 collections including 38 occurrences