university of utah · 83.5 86.3 — 88.7 93.3 98.5 124 144 utah's late mesozoic stratigraphy...

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Page 1: University of Utah · 83.5 86.3 — 88.7 93.3 98.5 124 144 utah's late mesozoic stratigraphy vs time dinosaur extinction north horn fm. kaiparowits formation select