Chambered nautilus
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The chambered nautilus, also called the pearly nautilus, is the best-known species of nautilus. The shell, when cut away, reveals a lining of lustrous nacre and displays a nearly perfect equiangular s
The first and so far oldest known fossil of chambered nautilus, displayed at the Philippine National Museum
1896 skiagraph (X-ray photograph) of a N. pompilius by James Green & James H. Gardiner, from Proceedings of the Malacological Society of London, Vol. II, Pl. XV, p. 178
The Burghley Nef, Paris 1520s; the hull is a shell
Nautilus stenomphalus
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Nautilus stenomphalus, also known as the white-patch nautilus, is a species of nautilus native to the Great Barrier Reef. N. stenomphalus is very similar to N. pompilius and may in fact represent a su
