’Tribotherians’ (Stem Boreasphenidans)

DESCRIBER    Butler, 1978
TIME    Cretaceous Early
Aptian Albian
CLASS    Mammalia
SUBCLASS    Boreasphenida
ORDER    Incertae Sedis
FAMILY    Kermackiidae
FOSSILSITE    Trinity Group, Texas, US
INFO

Type species by monotype. Represented by a single lower molar, the holotype of the type species.