1865
Rhizophyllum gotlandicum var. — Lindström, pp. 280, fig. 30:10-11
1882
Rhizophyllum elongatum n. sp. — Lindström, pp. 32, fig. 1:9-12; 2:1-18
1883
Rhizophyllum elongatum Lindström — Lindström, pp. 71
1974
Rhizophyllum elongatum Lindström — Lavrusevich, fig. pl. 1 fig 4 only
1974
Rhizophyllum elongatum Lindström — Birenheide, fig. 4:16a
1981
Rhizophylloides elongatus (Lindström) — Hill, pp. F110, fig. 50.4
1998
Rhizophyllum elongatum Lindström, 1882 — Johannessen, pp. 10, fig. 8A-V, 9A-T, 10A-M, 11A-V, 12C