Nautilus Fossil | France Formation this specimen dates to approximately

this specimen dates to approximately 180 million years ago

which has been described as "the largest open pit coal mine in the United States

Michela & Young

which suggests the hunting strategy of contemporary lionesses

Their fossil shells usually take the form of planispirals

Nautilus Fossil | France Formation this specimen dates to approximatelyCenoceras sp. Jurassic (201 184 million years ago) Belmont, France Specimen approx. size: 5" x 4. 5" x 3" Cenoceras is an extinct genus of nautiloid cephalopods that thrived from the Late Triassic to the Early Cretaceous. It belongs to the order Nautilida, which includes modern nautiluses. This genus is among the most common and well documented nautiloids from the Jurassic period. Morphological Description Cenoceras had a relatively simple, involute