Oppelia

Oppelia is a haploceratoid ammonite and type genus for the Oppeliidae that lived during the Middle Jurassic.^[1] Shells of Oppelia are involute with a small to moderate size umbilicus, bluntly rounded to sharp venter, and deeply impressed dorsum. Sides are generally smooth but may be variously ribbed on the outer flanks. Similar and related genera include Oxycerites and Oecotraustes.

Oppelia Temporal range: Aalenian–Bajocian[1] PreꞒ Ꞓ O S D C P T J K Pg N
Oppelia with paired aptychi in place
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	†Ammonoidea
Order:	†Ammonitida
Family:	†Oppeliidae
Subfamily:	†Oppeliinae
Genus:	†Oppelia Waagen, 1869
Species[2]
Oppelia mamertensis Waagen, 1869 Oppelia paronai Trauth, 1922 Oppelia plicatella Gemmellaro, 1877 Oppelia propefusca Gregorio, 1886 Oppelia subcostaria Oppel, 1862 Oppelia yeovilensis Rollier, 1911

Distribution

Jurassic of Germany, Greenland, India, Italy, Madagascar, Mexico, Poland, Spain and the United Kingdom ^[2]