Biology:Peltoceratinae

Short description: Subfamily of molluscs (fossil)

Peltoceratinae Temporal range: Middle Jurassic–Upper Jurassic PreЄ Є O S D C P T J K Pg N
Fossil shell of Peltoceras arduennense from Calvados (France), on display at Galerie de paléontologie et d'anatomie comparée in Paris
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	†Ammonoidea
Order:	†Ammonitida
Family:	†Aspidoceratidae
Subfamily:	†Peltoceratinae Spath, 1924
Genera
Gregoryceras Metapeltoceras Parapeltoceras Peltoceras Peltoceratoides Peltoraspailites Prieserites Pseudogregoryceras Raspailites Rursiceras Unipeltoceras

The Peltoceratinae comprise a subfamily in the Aspidoceratidae, (middle and upper Jurassic perisphinctacean ammonites).

Genera in the Peltoceratinae have sharply ribbed inner whorls and outer whorls that bear spines or tubercles, or have coarse simple ribs. Among these are giant forms with simple peristomes (aperture openings) that occur along with smaller forms with lappets.

Derivation of the Peltoceratinae seems most likely to be from the Pseudoperisphinctinae.

References

• Arkell et al., 1957. Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology, Part L (Ammonoidea). Geol Soc of America and Univ Kansas Press.

Wikidata ☰ Q7161756 entry