Original paper

A new Pteridosperm from upper Pennsylvanian deposits of North American

Delevoryas, Theodore;Morgan, Jeanne

Palaeontographica Abteilung B Band 096 Lieferung 1-2 (1954), p. 12 - 23

published: Jan 1, 1954

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Keywords

pteridosperms, Pennsylvanian • Pennsylvanian • USA