A new species of Apatemyidae, Sinclairella simplicidens, is based on four isolated teeth that
were screenwashed from fissure fillings at the late Oligocene Buda locality, Alachua County,
Florida. Compared to its only congener Sinclairella dakotensis, the new species is
characterized by upper molars with more simplified crowns, with the near absence of labial
shelves and stylar cusps except for a strong parastyle on M1, loss of paracrista and
paraconule on M2 (paraconule retained but weak on M1), lack of anterior cingulum on M1 …