User:Abyssal/Prehistory of Europe/Selected picture/31

A fossil shell of the harpoceratid ammonoid Ochetoceras canaliculatum. The shell dates back to the Oxfordian age (157.3–163.5 million years ago) of the Late Jurassic epoch and is about 9 cm in diameter. It was collected near Wildegg, Switzerland.
Photo credit: H. Zell