论文信息 - Studies in the Trigonocarpales. Part I. Pachytesta vera, a New Species from the Des Moines Series of Iowa - 字舞流文

Studies in the Trigonocarpales. Part I. Pachytesta vera, a New Species from the Des Moines Series of Iowa

A. T. Cross | J. Hoskins

[1] A. T. Cross,et al. Monograph of the Paleozoic Cone Genus Bowmanites (Sphenophyllales) , 1943 .

[2] F. D. Reed. Structure of Some Carboniferous Seeds from American Coal Fields , 1939, Botanical Gazette.

[3] T. G. Halle. The structure of certain fossil spore-bearing organs believed to belong to pteridosperms , 1933 .