original description(ofCerataulus ovalis Schmidt in Schmidt et al., 1888)Schmidt, A. (1888). Atlas der Diatomaceen-kunde. Leipzig. Fues's Verlag (R. Reisland), Series III(Heft 29-30): pls. 113-120 page(s): pl. 115; fig. 5-7 [details]
new combination referenceBoyer, C.S. (1900). The Biddulphoid forms of North American Diatomaceae. Proceedings of the Academy of Natural Sciences of Philadelphia, 1900: 685-748 page(s): p. 712 [details]