Opinion 538 Designation under the Plenary Powers of a type species in harmony with accustomed usage for the nominal genus Ptychopyge Angelin, 1854 (Class Trilobita)
International Commission on Zoological Nomenclature Hemming, Francis
Article
1959-02-27
Opinions and declarations rendered by the International Commission on Zoological Nomenclature
20
Issue: 5
57--64
BHL Australia BioStor
English
London Printed by order of the International Trust for Zoological Nomenclature
BioStor: https://biostor.org/reference/146453 DOI: https://doi.org/10.5962/p.149811
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