Peltoceratinae

Peltoceratinae
Temporal range: Middle Jurassic–Upper Jurassic
Fossil shell of Peltoceras arduennense from Calvados (France), on display at Galerie de paléontologie et d'anatomie comparée in Paris
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Ammonitida
Suborder: Ammonitina
Superfamily: Perisphinctoidea
Family: Aspidoceratidae
Subfamily: Peltoceratinae
Spath, 1924

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


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