Hecticoceratinae

Hecticoceratinae; Temporal range: Bathonain - Oxfordian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	†Ammonoidea
Order:	†Ammonitida
Family:	†Oppeliidae
Subfamily:	†Hecticoceratinae; Spath. 1925
Genera
	See text

Hecticoceratinae is a subfamily of oppeliids from the Middle and Upper Jurassic typically with strong falcoid or falcate ribbing that covers whorl sides completely. Venters are usually keeled and may be tricarinate.^[1]

The Hecticocerainae, which has its origin in the Oppeliinae, give rise to the near the beginning of the Middle Jurassic Callovian, and to the early in the Upper Jurassic Oxfordian.^[2] Neither apparently gave rise to any subsequent groups.

Genera[]

Hecticoceras, Brightia, Eochetoceras, Hecticoceratoides, Lunuloceras, Kheraites, Proheticoceras, Pseudobrightia, and Pseudobrightia, listed as separate genera in the Treatise^[1] are regarded as subgenera of Hecticoceras

References[]

^ ^a ^b Treatise on Invertebrate Paleontology Part L, L276 (Ammonoidea)
^ Classification of Jurassic Ammonitina, D.T. Donovan, et al., Systematics Assoc., 1981

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[Treatise-1] Treatise on Invertebrate Paleontology Part L, L276 (Ammonoidea)

[2] Classification of Jurassic Ammonitina, D.T. Donovan, et al., Systematics Assoc., 1981

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