Opinions and declarations Rendered by the International Commission on Zoological Nomenclature

The purpose of this application is to conserve the current usage of the generic name Polonograptus Tsegelnjuk, 1976 for an Upper Ludlow monograptid. Pribyl (1983) considered the originally designated type species, Monograptus butovicensis Boucek, 1936, to be composite; he restricted the nominal species M. butovicensis to its type material and established Polonograptus podoliensis for strongly curved specimens of Upper Ludlow age which he had previously included in M. butovicensis. Urbanek & Teller (1997) suggested that P. podoliensis should be designated as the type species of Polonograptus, and this action is now proposed

Opinions and declarations Rendered by the International Commission on Zoological Nomenclature

The purpose of this application is to conserve the current usage of Glassia Davidson, 1881 and Lissatrypa Twenhofel, 1914 for two important genera of smooth-shelled Silurian brachiopods with radically different internal structure. Davidson designated Atrypa obovata Sowerby, 1839 as the type species of Glassia, but this species is now known from its internal structure, particularly its dorsally directed spiralia, to be a species of the genus Lissatrypa (type species L. atheroidea Twenhofel, 1914). To avoid synonymy between Glassia and Lissatrypa, and between the nominal families based on them, it is proposed that Glassia elongata Davidson, 1881, with medially directed spiralia, be designated as type of Glassia

Opinions and declarations Rendered by the International Commission on Zoological Nomenclature

The purpose of this application is to conserve the name of Ikeda taenioides (Ikeda, 1904) for a species of echiuran from the coasts of Japan. Thalassema halotaeniai Ikeda, 1901 and T. taeniaides Ikeda, 1902 are earlier names which have remained unused since publication and it is proposed that they be suppressed. The genus Ikeda Wharton, 1913, the subfamily ikedinae Bock, 1942 and the order Heteromyota Fisher, 1946 were established in the phylum Echiura based on the single species.

Opinions and declarations Rendered by the International Commission on Zoological Nomenclature

Opinions and declarations Rendered by the International Commission on Zoological Nomenclature

Opinions and declarations Rendered by the International Commission on Zoological Nomenclature

Opinions and declarations Rendered by the International Commission on Zoological Nomenclature

Opinions and declarations Rendered by the International Commission on Zoological Nomenclature

Opinions and declarations Rendered by the International Commission on Zoological Nomenclature

Opinions and declarations Rendered by the International Commission on Zoological Nomenclature