There are six living species of nautilus. They are called “living fossils” because they have existed for about 550 million years. Nautiluses live in shells that are divided into chambers. As they grow, they move into a new, larger chamber and close the old one. The Chambered Nautilus is the most common nautilus. It lives in the South Pacific.
- Goetz, B. 2000. "Nautilus pompilius" (On-line), Animal Diversity Web. Available from: http://animaldiversity.ummz.umich.edu/site/accounts/information/Nautilus_pompilius.html
- Young, Richard E. 2010. Nautiloidea. Nautilidae Blainville 1825. Pearly nautiluses. Version 15 August 2010 (under construction). http://tolweb.org/Nautilidae/19397/2010.08.15 in The Tree of Life Web Project, http://tolweb.org/
- “Nautilidae”. Encyclopedia of Life, available from: http://www.eol.org/pages/2314/entries/33331117/details
- “Nautilus pompilius.” .” Wikipedia, the Free Encyclopedia. Available from: http://en.wikipedia.org/wiki/Nautilus_pompilius
- “Nautilus pompilius”. Encyclopedia of Life, available from: http://www.eol.org/pages/590944/details
- “Nautilus.” .” Wikipedia, the Free Encyclopedia. Available from: http://en.wikipedia.org/wiki/Nautilus
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