1967
Plectodonta propinqua Rybnikova, sp. nov — Rybnikova in Gailite et al., pp. 191, fig. XIX 5-7
1984
Ygerodiscus propinqua (Rybnikova, 1967) — Rubel et al., pp. 13
2004
Eoplectodonta (Ygerodiscus) propinqua — Musteikis & Cocks, pp. 473
2004
Eoplectodonta (Ygerodiscus) undulata — Musteikis & Cocks, pp. 473