Richard E. Blackwelder
Southern Illinois University Carbondale
Curtis W. Sabrosky
Smithsonian Institution
R.L. Batten
Phoenix (United States)
Ellis L. Yochelson
National Museum of Natural History
Raymond C. Moore
Mayo Clinic in Arizona
G. Arthur Cooper
Smithsonian Institution
Norman D. Newell
American Museum of Natural History
N H Ludbrook
Geological Survey of Western Australia
C. M. Yonge
University of Edinburgh
R. L. Batten
University of Wisconsin–Madison
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