1899
Monograptus harpago n. sp. — Törnquist, pp. 16-17, fig. 3:3,7
1970
Monograptus knockensis? Elles et Wood, 1913 — Rickards , pp. 72, fig. 6:6
1975
Monograptus lobiferus (MCoy, 1850) — Hutt, pp. 95, fig. 18:1
1975
Monograptus lobiferus harpago (Törnquist, 1899) — Bjerreskov, pp. 67, fig. 10:E
1998
Campograptus lobiferus harpago Törnquist, 1899 — Šorch, pp. 244, fig. 10:1; 12:6; text fig. 10:7
2003
Campograptus harpago (Törnquist) — Loydell et al., pp. 210, fig. 5r
2003
Campograptus harpago (Törnquist, 1899) — Chopey-Jones et al., pp. 83, fig. 1L, M
2009
Campograptus harpago (Törnquist) — Loydell & Maletz, pp. 290