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OPINION 2367 (Case 3598) Thyone Oken, 1815 and Psolus Oken, 1815 (Echinodermata, Holothuroidea): names reinstated as available

ICZN International Commission on Zoological Nomenclature


The Commission has reinstated as available the generic names Thyone
Oken, 1815 and Psolus Oken, 1815, which were introduced by Oken (1815) in a work that was suppressed by the Commission in Opinion 417 because it was not
consistently binominal. The names acquired availability from subsequent use by
Lesson (1830) with concepts that differ completely from Oken’s, and from the
currently accepted usage of these names. Thyone and Psolus are among the most
frequently used generic names in the Holothuroidea.

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