1856
Oistodus parallelus n. sp. — Pander, pp. 27, fig. 2:10
1971
Paroistodus parallelus (Pander) — Lindström, pp. 47, fig. 8,11
1978
Paroistodus parallelus (Pander, 1856) — Löfgren, pp. 68-69, fig. 1:18-21
1993
Paroistodus parallelus (Pander, 1856) — Löfgren, fig. 5H-K
1997
Paroistodus parallelus (Pander, 1856) — Löfgren, pp. 923-924, fig. 1:1-12,17,21
2001
Paroistodus parallelus (Pander, 1856) — Rasmussen, fig. 13:4-5