Hierarchy classification:

1. top of the aat hierarchies
2. Agents Facet
3. Living Organisms (hierarchy name)
4. living organisms (entities)
5. Eukaryota (domain)
6. Animalia (kingdom)
7. Mollusca (phylum)

Narrower term/s

• Octopoda (order)
• Teuthida (order)
• Sepiida (order)
• Sepiolida (order)
• Spirulida (order)
• Vampyromorpha (order)
• Nautiloidea (subclass)[+]
  • Nautilida (order)

Anotations

Scope note:

A class of highly advanced and organized, exclusively marine animals having a well-developed head with large, well-organized eyes, a pair of strong, bony jaws like a parrot's beak, a set of elongated muscular arms or tentacles usually furnished with prehensile suckers or hooks, and in most species a bag of inklike fluid which they can eject to foil predators. Familiar representatives are the octopus, squid, cuttlefish, and chambered nautilus; there were a large number of distinct extinct forms, particularly flourishing in the late Paleozoic and Mesozoic times.