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An early Reticuloceras zone fauna from the hale formation in northwestern Arkansas / by Mackenzie Gordon.

By: Gordon, Mackenzie, 1913-.
Material type: materialTypeLabelBookSeries: Geological Survey Professional Paper; 613-A.Publisher: Washington : United States Government Printing Office, 1968Description: 19 p., [2] h. de lam. --.Content type: Texto (visual) Media type: sin mediación Subject(s): Arkansas | Cefalópodos fósiles
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