Trisha Shetty (Editor)

Hecticoceratinae

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Kingdom
  
Class
  
Order
  
Rank
  
Subfamily

Phylum
  
Subclass
  
Superfamily
  
Haplocerataceae

Similar
  
Hecticoceras, Lissoceras, Oxynoticeras, Peltoceras, Kosmoceras

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.

The Hecticocerainae, which has its origin in the Oppeliinae, give rise to the Distichoceratinae near the beginning of the Middle Jurassic Callovian, and to the Glochiceratinae early in the Upper Jurassic Oxfordian. 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 are regarded as subgenera of Hecticoceras

References

Hecticoceratinae Wikipedia


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