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For the hornwort, see Anthoceros.
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Nautiloidea
Order: Endocerida
Family: Proterocameroceratidae
Genus: Anthoceras
Teichert and Glenister 1954

Anthoceras is a straight, annulated, proterocamerioceratid (Order Endocerida) from the Lower Ordovician, found in North America, NW 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.

This genus is based on the phargmocone, the chambered part of the shell; the apical and apetural ends are unknown


  • Curt Teichert, 1964. Endoceratoidea. Treatise on Invertebrate Paleontology, Part K. Geol Soc. of America and Univ of Kansas press. Teichert and Moore (eds)
  • Teichert; Glenister (1954). "Early Ordovician cephalopod fauna from northwestern Australia". Bulletins of American Paleontology. 35 (150): 7–112. 

See also[edit]