The Geological History of Plants

by Sir John William Dawson

Fig. 51.—Group of coal-formation ferns, A, Odontopteris subcuneata (Bunbury), B, Neuropteris cordata (Brongniart). C, Alethopteris lonchitica (Brongniart). D, Dictyopteris obliqua (Bunbury). E, Phyllopteris antiqua (Dawson), magnified; E¹, Natural size, F, Neuropteris cyclopteroides (Dawson).

Fig. 52.—Alethopteris grandis (Dawson). Middle coal-formation of Nova Scotia.

Fig. 53.—Cyclopteris (Aneimites) Acadica (Dawson), a tree-fern of the Lower Carboniferous. a, Pinnules. b, Fragment of petiole. c, Remains of fertile pinnules.