original description(of)Koechlin, E., 1943, Pseudocyclammina virguliana n. sp. aus den Virgula-Mergeln des Bemer Jura, Eclogae Geologicae Helvetiae (1942) 35:195-199. , available online athttps://www.e-periodica.ch/digbib/view?pid=egh-001:1942:35#212 page(s): p. 195, pl. 6, figs. 1-9 [details]