Contribution
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
publié: Jan 1, 1954
Mots-clefs
pteridosperms, Pennsylvanian • Pennsylvanian • USA