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(en) Valdar Jaanusson, «Proposed use of the Plenary Powers to suppress the generic name Asaphus as published by Brongniart in Desmarest, 1817, and to designate a type species in harmony with general usage for the genus Asaphus Brongniart, 1822 (Class Trilobita)», The Bulletin of Zoological Nomenclature, vol.12, no3, , p.90–96 (lire en ligne).
(en) International Commission on Zoological Nomenclature, «Direction 111 - Entomostracites punctatus Wahlenberg (Trilobita) (Official List Of Specific Names No. 1595): Date To Be Cited As [1818]», Bulletin of Zoological Nomenclature, vol.39, (lire en ligne).