cephalopod
A cephalopod is any member of the molluscan class Cephalopoda. These exclusively marine animals are characterized by bilateral body symmetry, a prominent head, and a set of arms or tentacles modified from the primitive molluscan foot.
Extant organisms
* squid
* cuttlefish
* octopus
* nautilus (animal)
Extinct organisms
* ammonite
Aliases: none