Hecticoceras

Hecticoceras is an ammonite genus belonging to the haploceratacean family Oppeliidae, that lived during the Middle and Late Jurassic, from the early Callovian to the early Oxfordian. Hecticoceras may be seen as a series of some nine subgenera, beginning with the lower Callovian H. (Hecticoceras) and H. (Hecticoceratoides) and ending with the lower...
Found on http://en.wikipedia.org/wiki/Hecticoceras
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