Haplopleuroceras

Haplopleuroceras
Temporal range:
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Ammonitida
Family: Hammatoceratidae
Subfamily: Zurcheriinae
Genus: Haplopleuroceras
Buckman, 1892

Haplopleuroceras is a Middle Jurassic ammonite and likely member of the Hildoceratacean family Sonniniidae with which it shares the same sort of ribbing.