A new theory of the morphology of the Calamarian cone.

[21] The anatomy of Palaeostachya vera. [J]. ANNALS OF BOTANY, 1907, 21 (81-84) : 369 - U94

[22] HIRMER M, 1925, FLORA NEUE FOLGE, V18, P227

[23] JANCHEN E, 1911, MITTEILUNGEN NATURWI, V1

[24] JEFFREU EC, 1899, MEMOIRS BOSTON SOC N, V5

[25] JONGMANS WJ, 1912, ANN K K HOFMUSEUMS W, V26, P449

[26] JONGMANS WJ, 1911, MEDEDEELINGEN RIJKSO, V1

[27] JONGMANS WJ, 1925, GEOLOGISCHE PALAONTO

[28] JONGMANS WJ, 1914, FOSSILIUM CATALOGUS

[29] Kidston R, 1883, ANN MAGAZINE NATURAL, V2, P297

[30] KIDSTON RE, 1909, VEGETAUX HOUILLERS R, V4

[21] The anatomy of Palaeostachya vera. [J]. ANNALS OF BOTANY, 1907, 21 (81-84) : 369 - U94

[22] HIRMER M, 1925, FLORA NEUE FOLGE, V18, P227

[23] JANCHEN E, 1911, MITTEILUNGEN NATURWI, V1

[24] JEFFREU EC, 1899, MEMOIRS BOSTON SOC N, V5

[25] JONGMANS WJ, 1912, ANN K K HOFMUSEUMS W, V26, P449

[26] JONGMANS WJ, 1911, MEDEDEELINGEN RIJKSO, V1

[27] JONGMANS WJ, 1925, GEOLOGISCHE PALAONTO

[28] JONGMANS WJ, 1914, FOSSILIUM CATALOGUS

[29] Kidston R, 1883, ANN MAGAZINE NATURAL, V2, P297

[30] KIDSTON RE, 1909, VEGETAUX HOUILLERS R, V4