Matheron in Heer (1861) considered the species a terrestrial Megaspiridae but without indicating a genus. ... [details]
Fabre-Taxy (1959) listed the species both under Bulimus (p. 89) and Viviparus (p. 70) without any discussion. [details]
Fabre-Taxy (1959) stated that "Matheron described incompletely without figuring it, under the name of L. ... [details]
Considered a junior synonym of Lychnus ellipticus Matheron, 1832 by Oppenheim (1895) and Caziot (1905). Fabre-Taxy ... [details]
Considered a synonym of Megalomastoma by Fabre-Taxy (1959) but treated as valid by Wenz (1938), Hrubesch (1965) and ... [details]
Rognac (Vallon du Duc), Bouches-du-Rhône, France; Rognacien, late Campanian to Maastrichtian, late Cretaceous [details]
Rognac (Vallon du Duc) and Saint-Victoret, Bouches-du-Rhône, France; Rognacien, late Campanian to Maastrichtian, ... [details]