original description(ofStauroneis salina var. latior Juhlin-Dannfelt, 1882)Juhlin-Dannfelt, H. (1882). On the Diatoms of the Baltic Sea. Bihang till Kongliga Svenska Vetenskaps-Akademiens Handlingar, 6(21): 1-52, 4 pls page(s): p. 32; pl. 3, fig. 21 [details]
new combination referenceMereschkowsky, C. (1903). Uber Placoneis, ein neues Diatomeen-Genus. Beihefte zum Botanischen Centralblatt, 15(1): 1-30, pl. 1. page(s): p. 20 [details]