Allonautilus

The genus Allonautilus contains two species of nautiluses, which have a significantly different morphology from those placed in the sister taxon Nautilus.[1] Allonautilus is now thought to be a descendant of Nautilus, rendering the latter genus paraphyletic.

Allonautilus
Allonautilus scrobiculatus shell with periostracum removed
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Nautiloidea
Order: Nautilida
Family: Nautilidae
Genus: Allonautilus
Ward & Saunders, 1997
Species

2, see text

Live individuals of the genus have only been collected in Papua New Guinea and the Solomon Islands. Little is known about their biology because they live in deep waters,[2] whereas the better-understood genus Nautilus lives closer to the surface.

The entire Nautilidae family, included all species in genus Nautilus and genus Allonautilus, was listed on Appendix-II of Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES). [3]

Species:

References
  1. Ward, P.D. & W.B. Saunders 1997. Allonautilus: a new genus of living nautiloid cephalopod and its bearing on phylogeny of the Nautilida. Journal of Paleontology 71(6): 1054–1064.
  2. Groth, J. G., et al. (2015). The mitochondrial genome of Allonautilus (Mollusca: Cephalopoda): Base composition, noncoding-region variation, and phylogenetic divergence. American Museum Novitates 3834 1-18.
  3. "Checklist of CITES species".
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