Xiphograptus lofuensis (Lee, 1961)

1961     Didymograptus lofuensis n. sp. — Lee, pp. 59, fig. 1:3a-c; 10

1974     Didymograptus formosus svalbardensis n. sp. — Archer et Fortey, pp. 91, fig. 3c-g; 4a-f

1982     ?Xiphograptus elongatus (Harris et Thomas) — Cooper et Fortey, pp. 289, fig. Pl 1; 11, 83a-c

1982     Xiphograptus formosus svalbardensis (Archer and Fortey) — Cooper et Fortey, pp. 291, fig. 1:6-8

1984     Xiphograptus sp. cf. Didymograptus (Exansograptus) similis (J. Hall) — Williams, pp. 20, fig. 5f; 10e; 12a-h

1988     Xiphograptus lofuensis (Lee) — Ni, pp. 184, fig. pl 1; 1-1a

1988     Xiphograptus svalbardensis (Archer and Fortey) — Williams et Stevens, pp. 56, fig. 15:1-15; 16:1-17