[MM] Picopsis pattersoni
’Tribotherians’ (Stem Boreasphenidans)
DESCRIBER Fox, 1980
TIME Cretaceous Late
FOSSILSITE Milk River Formation, Alberta, Canada
Upper molars longer anteroposteriorly than transversely, whitout enterior stylar shelf and stylocone, wery little of no ectoflexus, mesostyle present, paracone higher than metacone, small protocone, no conules and no precingulum (weak postcingulum present). Attributed lower molar is represented only by the trigonod, with bladelike anteriorly placed paraconid, and reduced posterior metaconid.