Vol. s3-37, Issue 220, 1889April 01, 1889 EDT
Events in North American Cretaceous History Illustrated in the Arkansas Texas Division of the Southwestern Region of the United States
Events in North American Cretaceous History Illustrated in the Arkansas Texas Division of the Southwestern Region of the United States
Robert Thomas Hill,
Hill, R. T. (1889). Events in North American Cretaceous History Illustrated in the Arkansas Texas Division of the Southwestern Region of the United States. American Journal of Science, s3-37(220), 282–290. https://doi.org/10.2475/ajs.s3-37.220.282