1936
Didymograptus formosus n. sp. — Bulman, pp. 22, fig. 1:5-7;
1954
Didymograptus formosus Bulman — Kozlowski, pp. 424, 426
1960
Didymograptus formosus Bulman — Jaanusson, pp. 341
1965
Didymograptus formosus Bulman — Skevington, pp. 17, fig. 17-23
1995
Xiphograptus formosus (Bulman) — Maletz, pp. 250
1997
Xiphograptus disermus Ni — Maletz , fig. 7j
2010
Xiphograptus formosus (Bulman, 1936) — Maletz, pp. 425, fig. 8D