Foerstellites

Foerstellites
Temporal range: Upper Ordovician
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Order: Endocerida
Family: Endoceridae
Genus: Foerstellites
Kobayashi, 1940
species

see text

Foerstellites is a genus of Ordovician cephalopods from North America, belonging to the family Endoceratidae, in which the siphuncle takes up the entire apex.

Foestellites, named by Kobayashi, 1940, is based on the apical part of the conch, or shell, which expands rapidly as septa are added. Not a true nanno type, since the siphuncle is not truly swollen at the apex. Probably the apical end of Cameroceras or Vaginoceras.

References

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