TERMIUM Plus®

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HETEROHELICIDAE [1 record]

Record 1 1977-08-02

English

Subject field(s)
  • Paleontology
OBS

[Foraminifers of the family Heterohelicidae have an early stage that is] trochospiral, planispiral, biserial or triserial, later may show serial reductions or proliferations; [the] aperture [is] large, simple or interiomarginal, or terminal in uniserial forms, without internal columellar processes. "M.Jur.-Eoc."

French

Domaine(s)
  • Paléontologie
OBS

[Les Foraminifères de la famille des Heterohelicidae ont un] enroulement planispiralé au début, passant ensuite à bi- et unisérié; les stades initiaux accélérés, peuvent disparaître. L'ouverture se trouve à la base de la face orale, puis devient terminale, parfois au bout d'un col à collerette ou avec des dents internes, qui, en se fusionnant au centre, peuvent conduire à une ouverture criblée.

Spanish

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