Fossil plants, Vol. 2: A text-book for students of botany and geology - A. C. Seward - Page №369

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[922] Heer (82) Pl. XLVII.

[923] Frič and Bayer (01) p. 76.

[924] Stenzel (86). See also Stenzel (97).

[925] Gwynne-Vaughan (08).

[926] Schenk (71) Pl. XXX.; Seward (94²) A. Pl. XI.

[927] Scott (08) p. 293.

[928] Goeppert (30) A. p. 217.

[929] Schimper (69) A. p. 424.

[930] Ettingshausen (66).

[931] Kidston (89³) Pl. I.