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

by A. C. Seward

[662] Williamson (77) and (80) A.

[663] Brongniart (28) A. p. 87.

[664] Carruthers (72³).

[665] Wild and Lomax (00).

[666] Scott (01).

[667] Letter from D. H. Scott (March 30, 1908).

[668] Scott (01) 314.

[669] Seward and Ford (06).

[670] For a contrary opinion, see Scott (09) p. 656.

[671] Bertrand, E. (94).