Mesodouvillina Williams, 1950

Musteikis, Petras & Cocks, L. Robin M., 2004, Strophomenide and orthotetide Silurian brachiopods from the Baltic region, with particular reference to Lithuanian boreholes, Acta Palaeontologica Polonica 49 (3), pp. 455-482 : 464

Genus Mesodouvillina Williams, 1950

Remarks.—The type species of the genus is M. subinterstrialis (Kozłovski, 1929) from the Lower Devonian Borshchov horizon of Podolia. Nikiforova et al. (1985: 22) reassigned Kozłowski’s (1929) Stropheodonta (Brachyprion) dzwinogrodensis from the Pridoli Skala horizon of Podolia to Mesodouvillina ? Unfortunately neither Kozłowski nor Nikiforova et al. illustrated or described the interior of any specimens of either valve of that species and we therefore regard the species as a nomen dubium. Thus it is not clear whether or not the genus is truly present anywhere in the Silurian. Rybnikova (1966: 83, 1967: 194) identified “ B. dzwinogrodensis Kozłowski ” from the Pridoli Piltene and Ezere boreholes of Latvia, but the specimens are reassigned here to Shaleria (see below).

Strophodonta colongensis ( Sapelnikov 1968: 87, pl. 33: 1, 2; Sapelnikov and Mizens, 1991: 90, pl. 38: 5, 6), from the Lower Pridoli of the eastern slope of the northern Urals, is unlikely to belong to that Devonian genus, but the species has not been reallocated to another genus here.