P-ISSN 0002-9599
E-ISSN 1945-452X
Vol. 248, Issue 12, 1950December 01, 1950 EDT
Tetrapods of the Pennsylvanian Nodules From Mazon Creek, Illinois
Tetrapods of the Pennsylvanian Nodules From Mazon Creek, Illinois
Joseph Tracy Gregory,
Gregory, J. T. (1950). Tetrapods of the Pennsylvanian nodules from Mazon Creek, Illinois. American Journal of Science, 248(12), 833–873. https://doi.org/10.2475/ajs.248.12.833