serpenticone

serpent +‎ -i- +‎ cone

serpenticone (plural serpenticones)

1. (malacology) An organism or fossil with a serpenticonic shell, or the shell itself.
   • 2013, Neil H. Landman, Kazushige Tanabe, Richard Arnold Davis, Ammonoid Paleobiology, Springer Science & Business Media, →ISBN, page 632:

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

serpenticone

1. (malacology) Serpenticonic.
   • 1927, Sydney Savory Buckman, Martin Simpson, George Young, Type Ammonites:

     [...] 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.

   • 1979, Paper, →ISBN:

     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.

• involute

• “serpenticone”, in The Century Dictionary […], New York, N.Y.: The Century Co., 1911, →OCLC.