Proposed use of the Plenary Powers to designate a type species in harmony with generally accepted usage for the genus Ptychopyge Angelin, 1854 (Class Trilobita)
Jaanusson, Valdar
Article
1956
The Bulletin of zoological nomenclature
11
359--361
BioStor
London International Trust for Zoological Nomenclature
BioStor: https://biostor.org/reference/2324 DOI: https://doi.org/10.5962/bhl.part.2867
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