TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

WHORLS SPIRE [5 records]

Record 1 2002-08-07

English

Subject field(s)
  • Paleontology
CONT

Types of coiling in gastropods :... Helicoid(Trochospiral) : Coiling in which the whorls are arranged spirally in more than one plane. There are different forms of helicoid shells : conical(Trochiform) : Conical shells with acute spire and flat base.... The shell of Nautilus is planispirally coiled.

OBS

planispirally coiled: [Said of a shell] coiled in the same plane (like a cinnamon roll).

French

Domaine(s)
  • Paléontologie
CONT

[Une] coquille trochocône [...] [est une coquille de Nautile dont] l'enroulement est [...] hélicoïde [...]

Spanish

Save record 1

Record 2 1997-04-25

English

Subject field(s)
  • Mollusks, Echinoderms and Prochordates
DEF

Thickened axis of the spire about which the whorls are developed.

French

Domaine(s)
  • Mollusques, échinodermes et procordés
DEF

Pilier central des coquilles de Gastropodes constitué des parties internes des tours et autour duquel s'enroulent ces tours.

Spanish

Save record 2

Record 3 1977-07-05

English

Subject field(s)
  • Paleontology
OBS

[Gastropods of the] superfamily Neritacea [have a] shell [that is] commonly coiled and ovoid or globular, more rarely capuliform or patelliform; whorls [are] few; [the] spire, if protruding at all, [is] relatively low; [the] outer shell layers [are] calcitic, unusually stable in fossils, commonly preserving [the] color pattern; [the] inner layers [are] thick, aragonitic, lamellar but not nacreous; [the] operculum, not developed in a few genera, [is] commonly calcareous, in many post-Paleozoic genera with processes projecting from [the] inner face and gripping [the] inner lip; living forms [have a] left kidney only; [a] single, bipectinate ctenidium [is] present on [the] left except in terrestrial forms, attached at its base only; [a] single hypobranchial gland, thought to be [a] homologue of [the] right one of other Archeogastropoda, [is] also present; [there is a] heart with 2 auricles, [the] right one in some [is] reduced or with [a] single auricle; pallial genital organs [are] developed and complex, fertilization [is] internal; retractor muscles [are] paired; [the] radula [is] rhipidoglossate, with [the] outermost admedians large, capituliform. "M. Dev.-Rec. ".

French

Domaine(s)
  • Paléontologie
OBS

[Les gastéropodes de la] super-famille des Neritacea [ont une] coquille globuleuse à spire courte et [à] tours fortement jointifs. [La] couche interne [est] porcelanée. [Ils n'ont] pas d'ombilic. [Ils ont un] opercule calcaire.

Spanish

Save record 3

Record 4 1977-07-05

English

Subject field(s)
  • Paleontology
OBS

[Gastropods of the] family Neritopsidae [have the following characteristics : the] shell [is] globular, [the] spire protruding but slightly or not at all, [the] last whorl [is] large; [the] inner lip [is] broad and smooth, formed by continuous inductura, or by inductura on [the] parietal region merging into [an] excavation of [the] columellar lip on its outer face; [the] inner walls of [the] whorls [are] not resorbed; [the] operculum [is] not spiral. "M. Dev.-Rec. ".

French

Domaine(s)
  • Paléontologie
OBS

[Les gastéropodes de la] famille des Neritopsidae [ont le] bord columellaire peu épaissi; [et des] tours internes non résorbés.

Spanish

Save record 4

Record 5 1977-07-02

English

Subject field(s)
  • Paleontology
OBS

[The term turriculate is used to describe a gastropod shell) with [an] acutely conical spire composed of numerous rather flat whorls(...)

French

Domaine(s)
  • Paléontologie
OBS

Le déroulement de la coquille (...) est beaucoup plus fréquent chez les coquilles turriculées que chez les formes trapues.

Spanish

Save record 5

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