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Consider re-using Uberon class

todo - reconcile with camera-type eye in uberon

In some squids arms IV are much longer and broader than the other arms.

Branchial hearts appear to be involved in hemocyanin synthesis

TODO - add buccal membrane support

The term 'carpus' is most appropriate where the carpal locking-apparatus is separate from the manus (e.g., Onychoteuthis spp.).

TODO - replace with uberon

todo - reconcile with metazoan def in uberon

todo - add subclasses for radula or skin

Predominately calcareous internal shell of sepiids (cuttlefish). It is composed of many chambers and functions primarily as a buoyancy organ. The cuttlebone is homologous with the phragmocone of Spirula, Nautilus and many fossil cephalopods.

todo - mireot

TODO - mireot uberon

todo - mireot

The pair of muscular "wings" used in swimming and located along the dorsolateral surface of the mantle, usually in its posterior half .

The gladius, found in many decapodiforms and Vampyroteuthis, is an internal remnant of the originally external shell of cephalopods. Other cephalopods have other types of shell remnants. The gladius lies within a sac, the shell sac, which secretes it and to which various muscles attach. The gladius has a variety of shapes and thicknesses, is composed mostly of chitin and is located in the dorsal midline and generally extends the full length of the mantle. Conus field - The lateral portion of the gladius that is continuous posteriorly with the primary conus or its remnant and laterally with the edges of the vanes. The conus field is differentiated from the vanes by longitudinal lines and marked changes in the orientation of the growth lines. A conus field is generally lacking if the gladius lacks a primary conus.

todo - stages

Taxon notes: Among Decapodiformes (ten-limbed cephalopods), generally either one or both of arms IV are hectocotylized; in incirrate octopuses it is one of arm pair III.[1] Many coleoids lack hectocotyli altogether.[1] The shape of the tip of the hectocotylus has been much used in octopod systematics. In many species it is considerably elaborated. However, in the males of some species, such as the Seven-arm Octopus (Haliphron atlanticus), the hectocotylus develops in an inconspicuous sac in front of the right eye that gives the male the appearance of having only seven arms

consider obsoleting

ontogenically derived from suckers on arms and/or clubs of some oegopsids

todo - mireot

Suckers of decapodiforms have two types of hard, horny rings. One, the inner ring, lies around the inner walls of the acetabulum and often bears teeth. The other, the outer ring, is composed of numerous platelets and lies on the surface of the infundibulum.

The siphon of Cephalopoda

See nuchal locking-apparatus.

Normally covered by anterior mantle wall

TODO - mireot membrane

editor note: check if this is part of the brain

Membranes, generally supported by trabeculae, that form lateral borders along the oral surfaces of the arms and tentacular clubs in decapodiforms.

todo - split

todo

todo - create subclass for undischarged form

todo - mireot

Modified 4th pair of appendages in decapodiforms that are capable of considerable extension and contraction. Although the tentacles are derived evolutionarily from the 4th pair of arms, the term, "arms IV"; is reserved for the subsequent arm pair, the ventral arms, which are evolutionarily the 5th pair of arms. Each tentacle consist of a proximal stalk usually devoid of suckers, and a distal club armed with suckers and occasionally hooks.

TODO: immune system

TODO: cells

squid

octopod

todo - mireot

TODO - mireot from uberon

found in fossil teuthoids

Nautiluses are the only living cepholopod with an external shell throughout their life cycle