ICZN. (1957). Opinion 455. Validation under the Plenary Powers (a) of the emendation to Sphenodon of the generic name Sphaenodon Gray (J.E.), 1831, and (b) of the family-group name SPHENODONTIDAE Cope, 1870 (Class Reptilia). Opinions and declarations rendered by the International Commission on Zoological Nomenclature. 15, 379-392.
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ICZN
1957
Opinion 455. Validation under the Plenary Powers (a) of the emendation to Sphenodon of the generic name Sphaenodon Gray (J.E.), 1831, and (b) of the family-group name SPHENODONTIDAE Cope, 1870 (Class Reptilia).
Opinions and declarations rendered by the International Commission on Zoological Nomenclature