The Noritidae, sometimes spelled Noritidea, is an extinct
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 ...
family of belonging to the
ammonoid order
Ceratitida and superfamily
Noritoidea.
The Noritidae, which lived during the Early and Middle Triassic, are characterized by smooth, flat, discoidal shells with tabulate venters bordered by pronounced shoulders. Sutures are ceratitic with club-shaped saddles.
References
The Paleobiology Database* Arkell et al. 1957, Mesozoic Ammonoidea
Treatise on Invertebrate Paleontology
Ceratitida families
Early Triassic first appearances
Middle Triassic extinctions
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