Cassinoceras

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Cassinoceras
Fossil range: Early Ordovician
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Nautiloidea
Order: Endocerida
Family: Piloceratidae
Genus: Cassinoceras

Cassinoceras ("Cassin Horn") is an Early Ordovician Endocerid nautiloid. They are characterised by a very short broad shells. The siphuncle is very large and filled with endocones.

Cassinoceras grande Ulrich & Foerste is known from Cassin Limestone of Vermont. It has a shell about 25 to 30 cm long.

[edit] References

  • Moore, Raymond C., Lalicker, Cecil G., & Fischer, Alfred G. 1952. Invertebrate Fossils. McGraw-Hill, New York. Page 355