Palau Nautilus

Palau Nautilus

Taxobox
name = Palau Nautilus
status =



image_caption = "Nautilus belauensis"
regnum = Animalia
phylum = Mollusca
classis = Cephalopoda
ordo = Nautilida
familia = Nautilidae
genus = "Nautilus"
species = "N. belauensis"
binomial = "Nautilus belauensis"
binomial_authority = Saunders, 1981

The Palau Nautilus ("Nautilus belauensis") is a species of nautilus native to the waters around the Pacific island nation of Palau. "N. belauensis" is very similar to "Nautilus pompilius" and shares with this species a closed umbilicus covered with a callus. It differs on the basis of a modified radula and fine raised ridges across and along the shell, which form a cross-grid texture. "N. belauensis" is the second largest nautilus after the giant form of "N. pompilius pompilius". The shell is usually up to around 210 mm in diameter, although specimens up to 226 mm have been recorded. [Jereb, P. 2005. Family Nautilidae. "In": P. Jereb & C.F.E. Roper, eds. "Cephalopods of the world. An annotated and Illustrated catalogue of species known to date. Volume 1. Chambered nautiluses and sepioids (Nautilidae, Sepiidae, Sepiolidae, Sepiadariidae, Idiosepiidae and Spirulidae)". FAO Species Catalogue for Fishery Purposes. No. 4, Vol. 1. Rome, FAO. pp. 51–55.]

References

* Norman, M. 2000. "Cephalopods: A World Guide". Hackenheim, ConchBooks, p. 22.

External links


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