THE COAL-AGE FLORA OF KANSAS .2. ON THE RELATIONSHIPS AMONG THE GENERA ETAPTERIS, SCLEROPTERIS AND BOTRYCHIOXYLON

[11] LECLERCQ S, 1931, ANN SOC GEOL BELGIQU, V55, P51

[12] SAHNI B., 1932, PHILOS TRANS ROY SOC LONDON B, V222, P29, DOI 10.1098/rstb.1932.0010

[13] On the branching of the Zygopteridean leaf, and its relation to the probable 'pinna' nature of Gyropteris sinuosa, Goeppert. [J]. ANNALS OF BOTANY, 1918, 32 (127) : 369 - 379

[14] Scott DH, 1912, T LINN SOC LOND, V7, P373

[15] THE PRIMARY VASCULAR BODY OF MESOXYLON-THOMPSONII, A NEW AMERICAN CORDAITALEAN [J]. AMERICAN JOURNAL OF BOTANY, 1950, 37 (04) : 318 - 325

[11] LECLERCQ S, 1931, ANN SOC GEOL BELGIQU, V55, P51

[12] SAHNI B., 1932, PHILOS TRANS ROY SOC LONDON B, V222, P29, DOI 10.1098/rstb.1932.0010

[13] On the branching of the Zygopteridean leaf, and its relation to the probable 'pinna' nature of Gyropteris sinuosa, Goeppert. [J]. ANNALS OF BOTANY, 1918, 32 (127) : 369 - 379

[14] Scott DH, 1912, T LINN SOC LOND, V7, P373

[15] THE PRIMARY VASCULAR BODY OF MESOXYLON-THOMPSONII, A NEW AMERICAN CORDAITALEAN [J]. AMERICAN JOURNAL OF BOTANY, 1950, 37 (04) : 318 - 325