original description
(of Helix (Leucochroa) subsemperiana P. Thomas, 1888 †) Thomas, P. (1888). Sur une forme ancestrale de l'<em>Helix (Leucochroa) candidissima</em> Draparnaud. <em>Bulletin de la Société des Sciences de Nancy, Série II.</em> 9(21): 80-88., available online at http://documents.irevues.inist.fr/bitstream/handle/2042/32174/ALS_1887_9_21.pdf?sequence=1
page(s): 83, unnumbered pl., figs 7-12 [details]
additional source
Wenz, W. (1923-1930). Fossilium Catalogus I: Animalia. Gastropoda extramarina tertiaria. W. Junk, Berlin. Vol. I: 1-352 pp. (1923), Vol. II: 353-736 pp. (1923), Vol. III: 737-1068 pp. (1923), Vol. IV: 1069-1420 pp. (1923), Vol. V: 1421-1734 pp. (1923), Vol. VI: 1735-1862 pp. (1923), Vol. VII: 1863-2230 pp. (1926), Vol. VIII: 2231-2502 pp. (1928), Vol. IX: 2503-2886 pp. (1929), Vol. X: 2887-3014 pp. (1929), Vol. XI: 3015-3387 pp. (1930)., available online at http://biodiversitylibrary.org/bibliography/61839#/summary
page(s): 391; note: misspelt as "subsemperi" [details]
From editor or global species database
Classification According to Nordsieck (2014: 166), some of the species assigned to Leucochroa by Wenz (1923) belong to Pseudoleptaxis Pilsbry, 1895, but he did not specify which species are concerned. Moreover, Leucochroa is invalid: it was suppressed and placed on the Official Index by Opinion 2135. Thus, the classification of this species remains doubtful. [details]