phragmocone


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phragmocone

the internal shell of a cuttlefish or other cephalopod made up of several chambers.
References in periodicals archive ?
Specimen MCNA 14392: part and counterpart of a crushed fragmentary internal mould corresponding to the end of the phragmocone and most of the body chamber.
The first section illustrates the differences between nautilids and ammonoids in respect to shell shape, ornamentation, body chamber, phragmocone, septa, the siphuncle and buoyancy regulation, apparatus, radula and diet, arms and tentacles, eyes, development, mode of life, reproduction, dimorphism, stability, swimming, pathology and teratology, taphonomy, biostratigraphy, mass extinctions, and more.
There are two possible approaches to studying phragmocone strength against implosion.