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PROTASPIS [1 record]

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Alphabetical list of terms

Record 1 1977-03-19

English

Subject field(s)
  • Paleontology
OBS

The first (...) stage in the larval development of trilobites (...) [The protaspis] consists of a simple, rounded, unjointed carapace of minute size (0.25 to 1.25mm), which represents the beginning of the cephalon.

French

Domaine(s)
  • Paléontologie
OBS

(...) stade larvaire [d'un trilobite] (...); cette larve a la forme d'un écusson ovale et convexe dont la taille est de l'ordre du millimètre. Elle se réduit à un céphalon trilobé avec une glabelle où l'on distingue cinq segments vers la fin de ce stade, les lobes palpébraux sont visibles sur le bord antérieur et de nouveaux segments apparaissent à l'arrière, formant un protopygidium.

Spanish

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