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BLASTOID [1 record]

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Record 1 1977-03-07

English

Subject field(s)
  • Paleontology
OBS

[Echinoderm characterized by] pronounced symmetry [...] the uniformity of arrangement of their thirteen or fourteen main thecal plates and the development [...] of specialized ambulacral areas which bear very numerous, small free brachioles.

French

Domaine(s)
  • Paléontologie
OBS

Échinoderme en forme de bouton de rose, chez lequel la symétrie radiée est parfaite, et définitive. Le calice est formé de cycles successifs de plaques; il est généralement fixé par une tige [...]

Spanish

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