Deep-Sea taxon details
original description
(of Clavulina obscura Chaster, 1892) Chaster, G. W. (1892). Report upon the foraminifera of the Southport Society of Natural Science district. First report Southport Society of Natural Science (1890-1891), appendix: 54-72., available online at https://books.google.pl/books/about/Report.html?id=wFM6AQAAMAAJ page(s): p. 58, pl. 1, fig. 4. [details] Available for editors 
new combination reference
Cushman, J. A. (1937). A monograph of the foraminiferal family Valvulinidae. <em>Cushman Laboratory for Foraminiferal Research Special Publication.</em> 8: 1-210. [details] Available for editors 
From editor or global species database
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