User:Abyssal/Prehistory of Europe/Selected picture/33

A fossil shell of the nostoceratid ammonoid Bostrychoceras polyplocum. The shell dates back to the Campanian age (72.1 to 83.6 million years ago) of the Late Cretaceous epoch and is about 20 cm long. It was collected near Haldem, Germany and is exhibited in the Museum für Naturkunde in Berlin.
Photo credit: H. Zell