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Traits source details
Fredericks, G. N. (1926). Tablitsa dlya opredeleniya rodov semeistva Spiriferidae King [Table for determination of the genera of the family Spiriferidae King]. Akademiya Nauk SSSR, Izvestiya (series 6). 20(5-6): 393-422, 1 plate.
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Fredericks, G. N.
1926
Tablitsa dlya opredeleniya rodov semeistva Spiriferidae King [Table for determination of the genera of the family Spiriferidae King]
Akademiya Nauk SSSR, Izvestiya (series 6)
20(5-6): 393-422, 1 plate.
Publication
Date action by
Syringothyrididae Fredericks, 1926 † (original description)
Syringothyridinae Fredericks, 1926 † (original description) Syringothyridoidea Frederiks, 1926 † (original description) |