EVOLUTION OF OVULE

[1] Andrews H. N., 1961, STUDIES PALAEOBOTANY

[2] ANDREWS HENRY N., 1949, ANN MISSOURI BOT GARD, V36, P479, DOI 10.2307/2394470

[3] ANDREWS HENRY N., 1963, SCIENCE, V142, P925, DOI 10.1126/science.142.3594.925

[4] On the structure of the Palaeozoic seed mitrospermum compressum (Will.). [J]. ANNALS OF BOTANY, 1910, 24 (93-96) : 491 - 509

[5] ARBER EAN, 1915, P CAMBRIDGE PHILOS S, V18, P89

[6] ARNOLD C. A., 1939, BULL TORREY BOT CLUB, V66, P297, DOI 10.2307/2480852

[7] PALEOZOIC SEEDS .2. [J]. BOTANICAL REVIEW, 1948, 14 (07) : 450 - 472

[8] BARNARD P. D. W., 1960, PALAEONTOLOGY, V3, P265

[9] BARNARD P. D. W., 1959, ANN BOT [LONDON], V23, P285

[10] BAXTER RW, 1961, PHYTOMORPH, V11, P220

[1] Andrews H. N., 1961, STUDIES PALAEOBOTANY

[2] ANDREWS HENRY N., 1949, ANN MISSOURI BOT GARD, V36, P479, DOI 10.2307/2394470

[3] ANDREWS HENRY N., 1963, SCIENCE, V142, P925, DOI 10.1126/science.142.3594.925

[4] On the structure of the Palaeozoic seed mitrospermum compressum (Will.). [J]. ANNALS OF BOTANY, 1910, 24 (93-96) : 491 - 509

[5] ARBER EAN, 1915, P CAMBRIDGE PHILOS S, V18, P89

[6] ARNOLD C. A., 1939, BULL TORREY BOT CLUB, V66, P297, DOI 10.2307/2480852

[7] PALEOZOIC SEEDS .2. [J]. BOTANICAL REVIEW, 1948, 14 (07) : 450 - 472

[8] BARNARD P. D. W., 1960, PALAEONTOLOGY, V3, P265

[9] BARNARD P. D. W., 1959, ANN BOT [LONDON], V23, P285

[10] BAXTER RW, 1961, PHYTOMORPH, V11, P220