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

by A. C. Seward

[222] Nathorst (90) A. Pl. II. fig. 3. Saporta (94) Pls. XXIII.-XXVI. Knowlton (98) p. 136.

[223] Lesquereux (78) Pl. V. fig. 12. See also Knowlton loc. cit.

[224] Zeiller (06) p. 141, Pls. XXXIX. XLI.

[225] Zeiller (00) p. 1077.

[226] Bennie and Kidston (88) Pl. VI. fig. 22.

[227] Goldenberg (55) Pl. I. fig. 3.

[228] Schimper (70) A. Pl. LVII. fig. 2.

[229] Halle (07).

[230] Goldenberg (55) Pl. I. fig. 2.

[231] Schimper (70) A. p. 10.