THE VEGETATIVE ANATOMY OF SCHOPFIASTRUM DECUSSATUM FROM THE MIDDLE PENNSYLVANIAN OF THE ILLINOIS BASIN

THE APPEARANCE OF GYMNOSPERMOUS STRUCTURE

1970 • 111 citations

RECONSTRUCTIONS OF ARCHAEOPTERIS, AND FURTHER CONSIDERATION OF ITS PHYLOGENETIC POSITION

1962 • 72 citations

Classification of Gymnosperms from the Viewpoint of Paleobotany

1948 • 51 citations

X.—Some Specimens of Lyginorachis papilio Kidston Associated with Stems of Pitys

1963 • 43 citations

Contributions to Our Knowledge of American Carboniferous Floras. VII. Some Pteridosperm Stems from Iowa

1945 • 34 citations

THE NATURAL AFFINITY OF THE CARBONIFEROUS SEED, CALLOSPERMARION

1970 • 29 citations

A New Pteridosperm from Upper Pennsylvanian Deposits of North America

1954 • 29 citations

STENOKOLEOS BIFIDUS SP. N. IN THE UPPER DEVONIAN OF NEW YORK STATE

1969 • 24 citations

Contributions of Our Knowledge of American Carboniferous Floras. V. Heterangium

1942 • 10 citations

Kalymma minuta (Read) comb. nov. from the New Albany Shale

1969 • 8 citations

I.—On the Structure of some Petioles associated withRhetinangiumGordon

1964 • 7 citations

Description of late Pennsylvanian strata from deep diamond drill cores in the southern part of the Illinois Basin

1967 • 4 citations