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

by A. C. Seward

[675] Weiss (76), p. 27, Pl. III. fig. 2.

[676] Lhwyd (1699), Pl. V. fig. 202.

[677] Sterzel (82).

[678] Vide Weiss (76), Pl. III. and Weiss (84), p. 178.

[679] Williamson (71), p. 487, Pls. XXV. and XXVI.

[680] Ibid. (78), p. 319, Pl. XIX.

[681] Cash and Hick (81), p. 400.

[682] Williamson (81), vide also Spencer (81).

[683] Spencer (83), p. 459.

[684] Williamson (83), p. 459, Pls. XXVII.–XXX.