Cambridge Encyclopedia » Cambridge Encyclopedia Vol. 53

nautilus - Description, Natural history

A primitive cephalopod mollusc with an external spiral shell containing gas in its chambers; numerous tentacles present around mouth; four gills; eyes like a pinhole camera in design, without lenses; only a single living genus known, but the group has an extensive fossil record. (Class: Cephalopoda. Subclass: Nautiloidea.)

Navan - Railways [next] [back] Nausicaa

User Comments

Your email address will be altered so spam harvesting bots can't read it easily.
Hide my email completely instead?

Cancel or