(DSM# 1876) These small marine clams are found in sediments that range from the late Cretaceous all the way to the Paleocene, which means they survived the K-Pg extinction.
(DSM# 3258/FK182) Extant genus - Turritellid snails are suspension feeders with an elongated shell. Suspension feeder means that the creature feeds on particles that are suspended in the water.