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PACHYDISCIDAE [1 record]

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Record 1 1977-07-21

English

Subject field(s)
  • Paleontology
OBS

[Ammonites of the family pachydiscidae are] moderate-sized to large, rather involute to evolute, [with the] whorl section inflated and depressed to compressed and high-whorled. [They have] strong ribbing at some stage of growth, normally crossing [the] venter without interruption, and showing [a] tendency to strong tuberculation at least on [the] umbilical shoulder (...) "L.Cret.(u.Alb.)-U.Cret.(Maastr).

French

Domaine(s)
  • Paléontologie
OBS

[Les Ammonites de la famille des pachydiscidae forment un] groupe polyphylétiques [avec des] formes ornées, discoïdes ou globuleuses où la costulation prédomine sur la tuberculation. [Les] sutures [sont] souvent finement persillées.

Spanish

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