1936
Dendrograptus rigidus n. sp. — Bulman, pp. 16, fig. 1:27-35
1947
Dendrograptus rigidus — Ruedemann, pp. 8-11, fig. 4-9
1963
Dendrograptus rigidus Bulman, 1936 — Skevington, pp. 8, fig. 4-9
2004
Dendrograptus rigidus Bulman, 1936 — Maletz et Egenhoff, pp. 219, fig. 2A, B; 3B,C