1880
Didymograptus filiformis — Tullberg, pp. 42, fig. 2:8-11
1880
Didymograptus filiformis — Lapworth, pp. 20
1901
Didymograptus filiformis — Törnquist, fig. 3:6-9
1902
Didymograptus filiformis — Ruedemann, pp. 556
1915
Didymograptus filiformis — Bassler, pp. 432
1930
Didymograptus filiformis — Monsen, pp. 122, fig. 2:5,12,13,18
1933
Didymograptus filiformis — Ruedemann, pp. 137
1947
Didymograptus filiformis — Ruedemann, pp. 333, fig. 54:54-60
2012
Acrograptus filiformis (Tullberg, 1880) — Li et al., pp. 118, fig. 5j-m