serpenticoneとは 意味・読み方・使い方

名詞

serpenticone (複数形 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.

形容詞

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.

参考

• involute

参照

• serpenticone in The Century Dictionary, The Century Co., New York, 1911