1861
Spirigerina cordata — Lindström, pp. 363, fig. 12:3
1967
?Spirigerina cordata Lindström — Boucot & Johnson, pp. 87
1974
Plagiorhyncha cordata (Lindström, 1861) — Bassett & Cocks, pp. 28
2004
Plagiorhyncha cordata (Lindström, 1861) — Copper, pp. 126
2004
perhaps Plagiorycha subaegualis — Copper, pp. 126