Biology:Foerstellites

From HandWiki
Short description: Extinct genus of molluscs

Foerstellites
Temporal range: Upper Ordovician
Scientific classification e
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Nautiloidea
Order: Endocerida
Family: Endoceratidae
Genus: Foerstellites
Kobayashi, 1940

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

  • Flower, Rousseau H.1958. Some Chazyan and Mohawkian Endoceratida. Jour of Paleontology, V.32, n3, pp433–458, May 1958
  • Teichert, C. 1964. Endoceratoidea, Treatise on Invertebrate Paleontology, part K. Geological Society of America and Univ. Kansas Press.

Wikidata ☰ Q5464020 entry