Traits name details
original description
Ludwig, R. (1859-1860). Die Najaden der Rheinisch-Westphälischen Steinkohlen-Formation. <em>Palaeontographica.</em> 8(1-2): 31-32, 33-38., available online at https://www.biodiversitylibrary.org/page/11942992 page(s): 35, pl. 4, fig. 16 [details]
additional source
Hind, W. (1894-1896). A monograph on <em>Carbonicola</em>, <em>Anthracomya</em>, and <em>Naiadites</em>. Palaeontographical Society, London, 182 pp. + 21 pls. [pp. 1-80, pls. 1-11 (Nov. 1894); pp. 81-170, pls. 12-20 (Oct. 1895); pp. 171-182, pl. 21 (Oct. 1896)]., available online at https://www.biodiversitylibrary.org/page/12240381 page(s): 23 [details]
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