Phragmocone

The phragmocone is the chambered portion of the shell of a cephalopod. It is divided by septa into camerae. In most nautiloids and ammonoids, the phragmocone is a long, straight, curved, or coiled structure, in which the camarae are linked by a siphuncle which determines buoyancy by means of gas exchange. Despite this benefit, such a large shell a...
Found on http://en.wikipedia.org/wiki/Phragmocone

Phragmocone

• (n.) The thin chambered shell attached to the anterior end of a belemnite.
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phragmocone

phragmacone noun the thin conical chambered internal shell (either straight or curved) of a belemnite
Found on https://www.encyclo.co.uk/local/20974

Phragmocone

Phrag'mo·cone noun [ Greek ..., ..., a fence, an inclosure + ... a cone.] (Zoology) The thin chambered shell attached to the anterior end of a belemnite. [ Written also phragmacone .]
Found on http://www.encyclo.co.uk/webster/P/78

phragmocone

[n] - the thin conical chambered internal shell (either straight or curved) of a belemnite
Found on http://www.webdictionary.co.uk/definition.php?query=phragmocone
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