Nautilus macromphalus
Bellybutton Nautilus
©Lexie Gersbeck and Gabi Howarth: Nautilus macromphalus about 10.5 cm diameter from the Lizard Island area. Note the distinctive open umbilicus ("belly button") in which the coils of the shell can be seen.
©Lexie Gersbeck and Gabi Howarth: Nautilus macromphalus about 10.5 cm diameter from the Lizard Island area.
©Anne Hoggett: Shell 16 cm diameter of Nautilus macromphalus washed up on Coconut Beach, Lizard Island.
Kingdom
Animalia
Phylum
Mollusca
Class
Cephalopoda
Order
Nautilida
Family
Nautilidae
Genus
Nautilus
Species
Nautilus macromphalus
Colours
Distinguishing features
Shell with an open umbilicus (inner coils of shell are visible) (Reid, 2016). Brown/orange bands extend to the umbilicus.
Size
- Up to 16 cm (diameter according to Reid, 2016)
Synonyms
Distribution
©Atlas of Living Australia: Australian distribution
Web resources
References
References that assist with identification
- Reid, A. (2016). Cephalopods of Australia and Sub-Antarctic Territories CSIRO, Clayton, Vic., Australia.
Other references
- Roper, C.F.E. and F.G. Hochberg (1986). Color and body patterns in cephalopods from Lizard Island, Australia,Unpublished manuscript. LIRS catalog number 204.
- Roper, C.F.E. and F.G. Hochberg (1987). Cephalopods of Lizard Island, Great Barrier Reef, Australia, Occasional Papers from the Museum of Victoria, 3: 15-20. LIRS catalog number 238.