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

by A. C. Seward

[952] Krasser (09) p. 111.

[953] Goeppert (41).

[954] Seward and Dale (01) p. 503.

[955] Nathorst (07²).

[956] Schenk (67) A. Pl. XVIII.

[957] Zeiller (03).

[958] Brongniart (25).

[959] Brongniart (25).

[960] Zeiller (03).

[961] Seward (04) pp. 18, 164.