Lexicon
Intervals
Macrostrat
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Uintan
410
Type
Age
Age range
47.9–39.9
Ma
International Timescale
Eocene
Bartonian
Lutetian
Ypresian
North American Land Mammal Ages
Duchesnean
Uintan
Bridgerian
North American Regional
Duchesnean
Uintan
Bridgerian
48
48
47
47
46
46
45
45
44
44
43
43
42
42
41
41
40
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