Productidina
Productidina is a genus of extinct marine bivalve mollusks that lived during the Late Cretaceous period, approximately 99.6 to 66 million years ago. The genus is known from fossils found in Europe, particularly in the chalk deposits of Denmark and England. Productidina is characterized by its distinctive, elongated shell shape, which is typically ovate or oval in outline, with a pronounced beak at one end and a more rounded or slightly pointed end at the other.
The shells of Productidina are generally thin and fragile, with a smooth or slightly ribbed surface. The
Productidina is believed to have been a filter feeder, using its siphons to draw in water and
Despite its importance in the fossil record, Productidina is not well-studied, and much about its biology and