WoRMS source details
Tanaka, O. (1956). The pelagic copepods of the Izu region, Middle Japan. Systematic account I. Families Calanidae and Eucalanidae. Publications of the Seto Marine Biological Laboratory 5(2):251-272, figs. 1-5. (30-vi-1956)
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Tanaka, O.
1956
The pelagic copepods of the Izu region, Middle Japan. Systematic account I. Families Calanidae and Eucalanidae.
Publications of the Seto Marine Biological Laboratory
5(2):251-272, figs. 1-5. (30-vi-1956)
Publication
Available in Wilson Copepod Library (non-digital)
Available for editors 
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Calanus finmarchicus helgolandicus Tanaka, 1956 accepted as Calanus finmarchicus (Gunnerus, 1770) (original description)
Eucalanus giesbrechti Mori, 1937 accepted as Eucalanus elongatus (Dana, 1849-1852) represented as Eucalanus elongatus elongatus (Dana, 1849-1852 (source of synonymy)
Eucalanus oculanus Marukawa, 1921 accepted as Eucalanus crassus Giesbrecht, 1888 accepted as Subeucalanus crassus (Giesbrecht, 1888) (source of synonymy)
Eucalanus giesbrechti Mori, 1937 accepted as Eucalanus elongatus (Dana, 1849-1852) represented as Eucalanus elongatus elongatus (Dana, 1849-1852 (source of synonymy)
Eucalanus oculanus Marukawa, 1921 accepted as Eucalanus crassus Giesbrecht, 1888 accepted as Subeucalanus crassus (Giesbrecht, 1888) (source of synonymy)
