User:Abyssal/Prehistory of Europe/Selected picture/21

Fossil shell of the graphoceratid ammonoid Hyperlioceras discites. The shell dates back to the Bajocian age (168.3–170.3 million years ago) of the Middle Jurassic epoch and is about 6.5 cm in diameter. It was collected near Achdorf, Germany. Photo credit: H. Zell