REFINE     Who What Where When     REMOVE Hyracotherium borealis WHAT Paleontology   (2) Willwood formation (2) WHERE Bighorn county, WY (2) WHEN Wasatchian (2)

REFINE  Browse All : Hyracotherium borealis 1-2 of 2 Willwood Fm. Eocene 51-...   Age Willwood Fm. Eocene 51-55 mya Willwood Fm. Eocene 51-...   Age Willwood Fm. Eocene 51-55 mya 1-2 of 2

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