The geological horizon of the dinosaurs Hallopus and Nanosaurus agilis

Charles Schuchert

doi:10.2475/ajs.237.1.19

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Schuchert, C. (1939). The geological horizon of the dinosaurs Hallopus and Nanosaurus agilis. American Journal of Science, 237(1), 19–26. https://doi.org/10.2475/ajs.237.1.19

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The Geological Horizon of the Dinosaurs Hallopus and Nanosaurus Agilis