Nautilus — Details

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Overview

Brief Summary

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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.
  • “Nautilus.” Wikipedia, the Free Encyclopedia. Available from: http://en.wikipedia.org/wiki/Nautilus
  • “Nautilidae”. Encyclopedia of Life, available from: http://www.eol.org/pages/2314/entries/33331117/details
  • 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/
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Ecology

Habitat

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Depth range based on 22 specimens in 6 taxa.
Water temperature and chemistry ranges based on 14 samples.

Environmental ranges
  Depth range (m): 150 - 475
  Temperature range (°C): 9.138 - 16.374
  Nitrate (umol/L): 8.806 - 30.508
  Salinity (PPS): 34.531 - 35.312
  Oxygen (ml/l): 1.675 - 4.409
  Phosphate (umol/l): 0.812 - 2.286
  Silicate (umol/l): 4.233 - 38.274

Graphical representation

Depth range (m): 150 - 475

Temperature range (°C): 9.138 - 16.374

Nitrate (umol/L): 8.806 - 30.508

Salinity (PPS): 34.531 - 35.312

Oxygen (ml/l): 1.675 - 4.409

Phosphate (umol/l): 0.812 - 2.286

Silicate (umol/l): 4.233 - 38.274
 
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Source: Ocean Biogeographic Information System

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Wikipedia

Nautilus (genus)

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Nautilus is a genus of cephalopods in the family Nautilidae. Species in this genus differ significantly in terms of morphology from those placed in the sister taxon Allonautilus.[1] The oldest fossils of the genus are known from the Late Eocene Hoko River Formation, in Washington State and from Late-Eocene to Early Oligocene sediments in Kazakhstan.[2] The oldest fossils of the modern species Nautilus pompilius are from Early Pleistocene sediments off the coast of Luzon in the Philippines.[2]

The common term nautilus usually refers to any extant members of the Nautilidae family.

Species

Extinct species are denoted with a dagger (†).

See also

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. ^ a b Ryoji, W.; et al (2008). "First discovery of fossil Nautilus pompilius (Nautilidae, Cephalopoda) from Pangasinan, northwestern Philippines". Paleontological Research 12 (1): 89–95. doi:10.2517/1342-8144(2008)12[89:FDOFNP]2.0.CO;2. 


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