''Euaspidoceras babeanum'' is an extinct

ammonoid Ammonoids are extinct, (typically) coiled-shelled cephalopods comprising the subclass Ammonoidea. They are more closely related to living octopuses, squid, and cuttlefish (which comprise the clade Coleoidea) than they are to nautiluses (family N ...

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

species that 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 143.1 Mya. ...

period. Fossils of ''Euaspidoceras babeanum'' may be found in the Upper Jurassic,

Oxfordian stage The Oxfordian is, in the ICS' geologic timescale, the earliest age of the Late Jurassic Epoch, or the lowest stage of the Upper Jurassic Series. It spans the time between 161.5 ± 1.0 Ma and 154.8 ± 0.8 Ma (million years ago). The Oxfordian i ...

of France, around 154 to 146 million years ago.

Description

''Euaspidoceras babeanum'' has a shell reaching up to of diameter. Le contact Callovien-Oxfordien dans les environs de Chaignay: nouvelles données stratigraphiques et paléontologiques
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References

Jurassic ammonites Aspidoceratidae {{Ammonitina-stub