Didacna barbotdemarnii (Grimm, 1877)
*1877 Cardium Barbot-de-Marnii Grimm: 56-58, pl. 8, figs 5, 6.
1952 Didacna barbot-de-marnyi [sic] (Grimm, 1877). - Zhadin: 348, fig. 323.
1969 Didacna barbotdemarnyi [sic] (Grimm). - Logvinenko and Starobogatov: 326-327, fig. 346, pl. 5, fig. 8.
1973 Didacna barbotdemarnyi [sic] Grimm, 1877. - Grossu: 133, text fig. 10.
2007 Didacna barbotdemarnyi [sic] (Grimm, 1877). - Nevesskaja: 941-943, pl. 24, figs 10-14.
2013 Didacna barbotdemarnii (Grimm, 1877). - Kijashko in Bogutskaya et al.: 353, fig. 139, photo 42.
2016 Didacna barbotdemarnii (Grimm, 1877). - Vinarski and Kantor: 71.
Status. Pontocaspian species, endemic to Caspian Sea.
Type locality. Caspian Sea, station 116, 44°17'N, 50°22'E.
Distribution. Southern, middle, and southern part of the northern Caspian Sea down to 40 m water depth, preferentially on sandy sediments (Logvinenko and Starobogatov 1969).
Conservation status. Not assessed.