†superfamily Microsyopoidea (primate)
Parent taxon: Plesiadapiformes according to J. J. Hooker et al. 1999
See also Gunnell 1989
Sister taxa: Palaechthon, Pandemonium, Paromomyoidea, Purgatoriidae
Subtaxa: Palaechthonidae Picromomyidae Plesiadapis orsmaelensis Toliapinidae
Ecology: arboreal insectivore-omnivore
Distribution:
• Eocene of France (2 collections), the United Kingdom (1), United States (4: California, Wyoming)
• Paleocene of Canada (4: Alberta), France (4), United States (26: Montana, New Mexico, Texas, Utah, Wyoming)
Total: 41 collections including 50 occurrences