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PRISMATIC PLANOCONVEX LENS [1 record]

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Record 1 2017-04-26

English

Subject field(s)
  • Paleontology
CONT

"Lindstrom" recognized 2 subtypes of holochroal [trilobite] eyes: (1) with prismatic planoconvex lenses ... [where] the lenses are hexagonal prisms that, as seen in sections normal to the visual surface of the eye, are between 2 and 3 times as long as wide. ... and, (2) with thin biconvex lenses.

French

Domaine(s)
  • Paléontologie
CONT

[L'œil holochroal d'un Trilobite peut avoir] deux types de lentilles : 1. des lentilles biconvexes [...] 2. des lentilles prismatiques plano-convexes, allongées radialement [...]; ce type, exceptionnel chez les crustacés actuels mais fréquent chez les Trilobites post-cambriens, semble en rapport à la fois avec une vision par superposition et une vie dans les grandes profondeurs [...]

Spanish

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