Ash, Sidney R. 1928-
Ferns from the Chinle formation (upper Triassic) in the Fort Wingate area, New Mexico / by Sidney R. Ash. -- Washington : United States Government Printing Office, 1969 - 52 p., [2] h. de lam. -- (Geological Survey Professional Paper ; 613-D).
Helechos fósiles
Nuevo Mexico
Paleobotánica
Triásico
561.35(789)"6151"
Ferns from the Chinle formation (upper Triassic) in the Fort Wingate area, New Mexico / by Sidney R. Ash. -- Washington : United States Government Printing Office, 1969 - 52 p., [2] h. de lam. -- (Geological Survey Professional Paper ; 613-D).
Helechos fósiles
Nuevo Mexico
Paleobotánica
Triásico
561.35(789)"6151"