Cyrtograptus hamatus (Baily, 1862)

1862     Graptolithus hamatus — Baily, pp. 305, fig. 4:6a-b

1914     Cyrtograptus hamatus (Baily) — Elles et Wood, pp. 510-511, fig. 52:3

1936     Cyrtograptus hamatus (Baily) — Bouček, pp. 46-47, fig. 5:9-11

1954     Cyrtograptus hamatus (Baily) — Cope, pp. 319-322, fig. 1a,e

1975     Cyrtograptus hamatus (Baily) — Berry et Murphy, pp. 82-83, fig. 11:1-2

1999     Cyrtograptus cf. hamatus (Baily, 1862) sic — Zalasiewicz et Williams, fig. 10 i-j

2004     Cyrtograptus cf. hamatus (Baily, 1861) — Williams et Zalasiewicz, pp. 239, fig. 7D-E