The Paracenoceratidae are an extinct family of prehistoric nautiloids. The

cephalopod A cephalopod is any member of the molluscan class Cephalopoda (Greek plural , ; "head-feet") such as a squid, octopus, cuttlefish, or nautilus. These exclusively marine animals are characterized by bilateral body symmetry, a prominent head ...

s lived during the

Jurassic The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The J ...

and

Cretaceous The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of th ...

periods.

Genera

*'' Aulacenoceras'' *'' Paracenoceras'' *'' Somalinautilus'' *'' Tithonoceras''

References

Prehistoric nautiloid families Jurassic cephalopods Cretaceous cephalopods Middle Jurassic first appearances Albian extinctions {{paleo-nautiloid-stub