Definition of Phragmocone. Meaning of Phragmocone. Synonyms of Phragmocone

Here you will find one or more explanations in English for the word Phragmocone. Also in the bottom left of the page several parts of wikipedia pages related to the word Phragmocone and, of course, Phragmocone synonyms and on the right images related to the word Phragmocone.

Definition of Phragmocone

Phragmocone
Phragmocone Phrag"mo*cone, n. [Gr. ?, ?, a fence, an inclosure + ? a cone.] (Zo["o]l.) The thin chambered shell attached to the anterior end of a belemnite. [Written also phragmacone.]

Meaning of Phragmocone from wikipedia

- The phragmocone is the chambered portion of the s**** of a cephalopod. It is divided by septa into camerae. In most nautiloids and ammonoids, the phragmocone...
- the arms-most to the tip: the tongue-shaped pro-ostra****, the conical phragmocone, and the pointy guard. The calcitic guard is the most common belemnite...
- baculites, nautiloids and goniatites. Belemnoids possessed a central phragmocone made of aragonite and with negative buoyancy. To the rear of the creature...
- distinctive slit at its ventral surface and a ridge on the dorsal surface. The phragmocone (internal s****) has a small protoconch at its tip, and fit into the...
- by their septa, the dividing walls that separate the chambers in the phragmocone, by the nature of their sutures where the septa joint the outer s****...
- characterized by a fan-like teuthoid pro-ostra**** attached to a belemnoid-like phragmocone. Jeletzky characterized phragmoteuthids as having a large tripartite...
- main difference between Boletzkya and Naefiteuthis is the length of the phragmocone at which time the living chamber becomes gladius-like and dominates the...
- specimen in the field; western South Dakota, Pierre Shale, Late Cretaceous. Part of the phragmocone (left) and part of the body chamber (right) are present....
- drawing away from the dorsum and forming a hump at the anterior end of the phragmocone where Sinclairoceras reaches its greatest width. The upper and lower...
- Spirula s****. In the latter, the siphuncle and the last septum of the phragmocone are visible. The position of the s**** inside the mantle is shown in...
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