A new theory of the morphology of the Calamarian cone.

[41] SCHENK A, 1888, FOSSILEN PFLANZENRST

[42] SCHMALHAUSEN J, 1879, MEMOIRES ACAD SCI 7, V27

[43] SCHUSTER J, 1907, GEOGNOST JH, V20, P183

[44] Scott D.H., 1908, STUDIES FOSSIL BOT

[45] Scott D.K., 1923, STUDIES FOSSIL BOT, V2

[46] SCOTT DH, 1905, PHIL T ROY SOC LONDO, V198

[47] SCOTT DH, 1907, PROGR REI BOT, V1

[48] Scott DH, 1920, STUDIES FOSSIL BOT, V1

[49] SCOTT DH, 1925, NEW PHYTOL, V24, P38

[50] SEWARD AC, 1898, FOSSIL PLANTS, V1

[41] SCHENK A, 1888, FOSSILEN PFLANZENRST

[42] SCHMALHAUSEN J, 1879, MEMOIRES ACAD SCI 7, V27

[43] SCHUSTER J, 1907, GEOGNOST JH, V20, P183

[44] Scott D.H., 1908, STUDIES FOSSIL BOT

[45] Scott D.K., 1923, STUDIES FOSSIL BOT, V2

[46] SCOTT DH, 1905, PHIL T ROY SOC LONDO, V198

[47] SCOTT DH, 1907, PROGR REI BOT, V1

[48] Scott DH, 1920, STUDIES FOSSIL BOT, V1

[49] SCOTT DH, 1925, NEW PHYTOL, V24, P38

[50] SEWARD AC, 1898, FOSSIL PLANTS, V1