E. B. Branson and M. G. Mehl. 1932. Footprint records from Cretaceous, Triassic, and Pennsylvanian. Bulletin of the Geological Society of America 42:284-285
Bibliographie (1)
E. B. Branson and M. G. Mehl. 1932. Footprint records from Cretaceous, Triassic, and Pennsylvanian. Bulletin of the Geological Society of America 42:284-285