Fossil plants, Vol. 2: A text-book for students of botany and geology - A. C. Seward

[622] Schimper (70) A. p. 71.

[623] Heer (71) Pl. VI. fig. 11; Pl. IX. fig. 1.

[624] Nathorst (94) A. p. 67, Pl. XV. figs. 14, 15.

[625] Schmalhausen (77) p. 281, Pl. I. fig. 5.

[626] Kidston (89²) Pl. IV. figs. 2–4, p. 65.

[627] Weiss and Sterzel (93) p. 56.

[628] Kidston (03) p. 823.

[629] Schmalhausen (77) p. 290, Pl. I. figs. 7–12.

[630] Dawson (71) A. Pl. VIII.

[631] Weiss, C. E. (84) Pl. VII.