Nautilida
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The Nautilida constitute a large and diverse order of generally coiled nautiloid cephalopods that began in the mid Paleozoic and continues to the present with a single family, the Nautilidae which inc
Nautilus pompilius
Procymatoceras subtruncatus fossil
Nautilus
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A nautilus is any of the various species within the cephalopod family Nautilidae. This is the sole extant family of the superfamily Nautilaceae, suborder Nautilina, order Nautilida, and subclass Nauti
Nautilida
…large and diverse order of generally coiled nautiloid cephalopods that began in the mid Paleozoic and continues to the present with a single family, the Nautilidae which includes two genera, Nautilus and Allonautilus, with six species. All told, between 22 and 34 families and 165 to 184 genera have been recognised…
Nautilus belauensis from Palau
The first and oldest fossil of chambered nautilus displayed at Philippine National Museum.
Nautilus half-shell showing the camerae in a logarithmic spiral
Section cut of a nautilus shell