Octopus Octopuses Octopi Octopod Octopoda – Say it three times, fast.    From Wordnik.com.  [Octopuses, octopi and oktopodes] Reference

The taxonomist notices the fact and distinguishes the two groups of Octopoda and Decapoda.    From Wordnik.com.  [Hormones and Heredity] Reference

The term octopod (plural octopods or octopodes) is taken from the taxonomic order Octopoda but has no classical equivalent.    From Wordnik.com.  [Rex Parker Does the NYT Crossword Puzzle] Reference

This type of Octopoda species is quite rare.    From Wordnik.com.  [CreationWiki - Recent changes [en]] Reference

Octopoda.    From Wordnik.com.  [CreationWiki - Recent changes [en]] Reference

Finned Octopoda.    From Wordnik.com.  [MONSTER BRAINS] Reference