User:Abyssal/Prehistory of Europe/Selected picture/27

A fossil shell of the graphoceratid ammonoid Leioceras comptum. The shell dates back to the Aalenian age (170.3–174.1 million years ago) of the Middle Jurassic epoch and is about 4.5 cm in diameter. It was collected near Schörzingen, Germany. Photo credit: H. Zell