User:Abyssal/Prehistory of Europe/Selected picture/25

A fossil shell of the ancyloceratid ammonoid Aegocrioceras spathi. The shell dates back to the Hauterivian age (~129.4–~132.9 million years ago) of the Early Cretaceous epoch and is about 7 cm in diameter. It was collected near Resse, Germany. Photo credit: H. Zell