Fossil plants, Vol. 1: [A text-book] for students of botany and geology

by A. C. Seward

[455] Nathorst (90) Pl. II. fig. 3.

[456] Lindenberg (39) Pl. IX. fig. 1.

[457] Zeiller (92²) Pl. I. figs. 7 and 8.

[458] Fliche and Bleicher (81).

[459] Brongniart (49) p. 12.

[460] Seward (94²) p. 17.

[461] Leckenby (64) Pl. XI. fig. 3.

[462] Seward loc. cit. p. 18, Pl. I. fig. 3.

[463] Raciborski (94) p. 10, Pl. VII. figs. 1–3.

[464] Brongniart (49) p. 12.