An ovuliferous callipteroid plant from the Hermit Shale (Lower Permian) of the Grand Canyon, Arizona
Mamay, S.H., and Watt, A.D., 1971, An ovuliferous callipteroid plant from the Hermit Shale (Lower Permian) of the Grand Canyon, Arizona: U.S. Geological Survey Professional Paper 750-C, p. C48-C51.
Authors
Mamay, S.H., and Watt, A.D.
Publication Date
1971
Citation
U.S. Geological Survey Professional Paper 750-C, p. C48-C51.