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

by A. C. Seward

[732] Boodle (00).

[733] Tansley and Lulham (02).

[734] Gwynne-Vaughan (01); (03).

[735] Boodle (01) p. 735.

[736] Jeffrey (00); (03).

[737] For an account of the probable methods by which this has been effected and of the factors concerned, see Tansley (08).

[738] Gwynne-Vaughan (03).

[739] Seward (99²); Wigglesworth (02).

[740] Seward and Ford (03); Jeffrey (03); Faull (01).

[741] Kidston and Gwynne-Vaughan (07); (08); (09).