Fossil plants, Vol. 1: [A text-book] for students of botany and geology

by A. C. Seward

[305] Carpenter (62) Pl. XI. fig. 32.

[306] Reuss (61) p. 8, figs. 5–8.

[307] Ellis (1755) Pl. XXV. C.

[308] Solms-Laubach (91) p. 38 gives a detailed description with two figures of a recent species of Cymopolia.

[309] Murray G. (95).

[310] Wille (97).

[311] Munier-Chalmas (77).

[312] Cramer (87) (90).

[313] Solms-Laubach (91) (93) (95³).

[314] Church (95).