Oppeliidae are compressed to oxyconic, sculptured Haploceratoidea, either unkeeled, unicarinate, bicarinate, or tricarinate; with sutures in great variety, but ribbing usually more or less falcoid or falcate. The Oppeliidae is the principal family of the Haploceratoidea, with the longest duration, extending from the Middle Jurassic (Bajocian) to the Upper Cretaceous (Cenomanian) Their derivation is from the Hildoceratoidea.

Oppeliidae
Temporal range: Bajocian - Cenomanian
Oxycerites sp.
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Ammonitida
Superfamily: Haploceratoidea
Family: Oppeliidae
Bonarelli, 1894
Subfamilies

See text

Subfamilies

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Nine subfamilies are recognized, the first eight of which are included in the earlier Treatise, Part L. They are the:

Oppeliinae
Hecticoceratinae
Distchoceratinae
Teramelliceratinae
Phlycticeratinae
Streblitinae
Mazapilitinae
Aconeceratinae
Binneyitinae

The Binneyitinae was added by Donovan et al, 1981, transferred from the Stephanoceratoidea.

References

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  • D.T Donavan, J.H. Callomon, and M.K Howarth. 1981. Classification of the Jurassic Ammonitina. In The Ammonoidea. M.R. House and J.R. Senior, eds. Systematics Assoc. Pub Academic Press.
  • Treatise on Invertebrate Paleontology Part L Mollusca 4, Mesozoic Ammonoidea. R.C Moore (ed.); Geol. Society of America and Univ. Kansas Press. (1957)

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