1955
Pravognathus aengensis — Lindström, pp. 585, fig. 5:10-13
1982
lapetognathus preaengensis LANDING, 1982 — Fortey et al., pp. 124-126, fig. text fig. 6B,C; 8B,C,H
1986
lapetognathus sp. — Kaljo et al., fig. 3:13
1988
lapetognathus preaengensis Landing, 1982 — Kaljo et al., fig. 4F,5F
1988
lapetognathus sp. — Kaljo et al., fig. 4bb, 5bb only
1999
Iapetognathus aengensis (Lindström, 1955) — Nicoll et al., pp. 43, fig. 1:1a-5f; 2:1a-4g; 3:1a-4c; 4:1a-3F; 5:1a-3f
2002
Iapetognathus aengensis (Lindström, 1955) — Pyle & Barnes, pp. 51, fig. 7:4,5