Anthoceras
Extinct genus of molluscs / From Wikipedia, the free encyclopedia
For the hornwort, see Anthoceros.
Anthoceras is a genus of straight, annulated, proterocamerioceratid molluscs (Order Endocerida) from the Lower Ordovician, found in North America, North-Western Australia, and Siberia. The cross section is circular, the siphuncle moderately large, and marginal. Segments are constricted (producing concave profiles in internal molds); septal necks hemichoantici to subholochoantic (reaching halfway to almost to the previous septum); connecting rings thick. Endocones are long and slightly asymmetric.
Quick Facts Scientific classification ...
Anthoceras | |
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Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Cephalopoda |
Subclass: | Nautiloidea |
Order: | †Endocerida |
Family: | †Proterocameroceratidae |
Genus: | †Anthoceras Teichert and Glenister 1954 |
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This genus is based on the phragmocone, the chambered part of the shell; the apical and apertural ends are unknown.