Fossil plants, Vol. 2: A text-book for students of botany and geology - A. C. Seward - Page №329

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[522] Solms-Laubach (91) A. p. 253.

[523] Renault and Grand’Eury (75) Pl. I. fig. 5.

[524] Coward (07).

[525] Renault (96) A. p. 237, Pl. XXXVIII. figs. 1–4.

[526] Kidston (05).

[527] Brongniart (28) A. Pls. CXLVI. CLV. CLVIII.

[528] Bertrand (99).

[529] Scott (08) p. 227, fig. 93.

[530] Kidston (07²).

[531] Arber and Thomas (07).