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MACROCEPHALITIDAE [1 record]

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Record 1 1977-07-20

English

Subject field(s)
  • Paleontology
OBS

[Ammonites of the family macrocephalitidae are] involute, globular, sharply ribbed with moderately complex sutures. [The] body chamber [is] smooth in many genera but seldom markedly contracted or excentric; [the] peristome [is] never collared, flared or constricted (...) "M.Jur.(M.Bath.-M.Callov.)", mainly "L.Callov.".

French

Domaine(s)
  • Paléontologie
OBS

[Les ammonites de la famille des macrocephalitidae ont des] coquilles globuleuses, à ombilic étroit, profond, régulièrement ornées de côtes généralement fines, souvent tranchantes, bi- ou multifurquées, traversant sans interruption la région externe, arrondie. Absence complète de tubercule. [L'] ouverture [est] souvent proverse, dépourvue d'apophyses. Loge d'habitation: un quart à un tour.

Spanish

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