ammonites
Neophylloceras ultinatum Spath 1953 (ammonite)

Cephalopoda - Phylloceratida - Phylloceratidae

Belongs to Neophylloceras according to M. K. Howarth 1965

Sister taxa: Hypophylloceras (Neophylloceras) ramosus, Neophylloceras hetonaiense, Neophylloceras nera

Type specimen: BMNH C41477, a shell.

Ecology: nektonic carnivore