serpenticone

plural serpenticones

1. biologyAn organism or fossil with a serpenticonic shell, or the shell itself.

   All or most were pelagic, ranging from planktic serpenticones and spherocones to mobile discocones and oxycones.

   2013, Neil H. Landman, Kazushige Tanabe, Richard Arnold Davis, Ammonoid Paleobiology, Springer Science & Business Media, →ISBN, page 632

1. biologySerpenticonic.

   [...] disturbance to such a form might produce rapid acceleration in two ways — in shape, from serpenticone to criocone, in ornament, from tuberculate to costate, that is, costate post-tuberculate.

   1927, Sydney Savory Buckman, Martin Simpson, George Young, Type Ammonites

   1 more example

   Coiling is serpenticone or heteromorph, sculpture is of ribbing (almost invariably simple), with external tuberculation in Choristoceratidae. Generally criocone although much of the phragmocone may be serpenticone.

   1979, Paper, →ISBN