1880
Janograptus laxatus — Tullberg, pp. 315, fig. Tafl. 11, figs. 3–9
1913
Janograptus laxatus Tullberg — Hadding, pp. 35, fig. pl. 1, figs. 19–22
1937
Janograptus laxatus Tullberg — Ekström, pp. 31, fig. pl. 6, figs. 7–8
2017
“Janograptus laxatus” Tullberg, 1880 — Chen, X. et al., pp. 121, fig. Figs. 6-11H; 6-12B, F–H, K–M