Hercoceras

Hercoceras is a genus of trochoidally coiled nautiloid cephalopods placed in the nautilid family Rutoceratidae. These cephalopod lived i in the Eifelian age of the middle Devonian Period, which occurred 398-391 million years ago. Their shells have prominent lateral outgrowths in the form of spines and a high intraspecific variability.

Hercoceras
Hercoceras mirus, Middle Devonian, Prague Basin, Czech Republic, at the National Museum (Prague)
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Nautiloidea
Order:
Nautilida
Family:
Rutoceratidae
Genus:
Hercoceras

Barrande, 1865

Systematic

The Paleobiology database places Hercoceras in the family Rutoceratidae in the order Nautilida, but according to some authors it should not be considered an early nautilid. They place this genus in the family Hercoceratidae in the superfamily Rutoceratoidea in the order Oncocerida.

Species
  • Hercoceras mirum Barrande
  • Hercoceras transiens Barrande
gollark: See, money can be exchanged for goods and services, and $70000 may allow purchase of MANY goods and services.
gollark: <@345023088045457410> Is that a car or something? Have you considered buying a lower priced product?
gollark: YouTube provides discovery (requiring huge scale and network effects) and advertising money (a troubling social problem).
gollark: Video hosting is *basically* a solved technical problem.
gollark: I don't think this is very useful except as a learning experience though.

References


    This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.