’Tribotherians’ (Stem Boreasphenidans)

DESCRIBER    Clemens & Lillegraven, 1986
TIME    Cretaceous Late
Campanian
CLASS    Mammalia
SUBCLASS    Boreasphenida
ORDER    Aegialodontidae
FAMILY    Picopsidae
FOSSILSITE    Judith River Formation,  Montana; \"Mesaverde Formation\", Wyoming, US
INFO

Type species by monotype. Represented by two upper molars