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LHMP |
Late Hemphillian (5.5-4.7 Ma) |
LEHP |
Late Early Hemphillian (6.7-5.5 Ma) |
EEHP |
Early Early Hemphillian (9-6.7 Ma) |
LCLA |
Late Clarendonian (10-9 Ma) |
ECLA |
Early Clarendonian (11.5-10 Ma) |
LLBA |
Late Late Barstovian (12.7-11.5 Ma) |
ELBA |
Early Late Barstovian (14.8-12.7 Ma) |
EBAR |
Early Barstovian (15.9-14.8 Ma) |
LHMF |
Late Hemingfordian (17.5-15.9 Ma) |
EHMF |
Early Hemingfordian (19-17.5 Ma) |
LLAK |
Late Late Arikareean (21-19 Ma) |
ELAK |
Early Late Arikareean (24-21 Ma) |
LEAK |
Late Early Arikareean (27.5-24 Ma) |
EEAK |
Early Early Arikareean (30-27.5 Ma) |
HEMP |
Hemphillian (9-4.7 Ma) |
CLAR |
Clarendonian (11.5-9 Ma) |
BARS |
Barstovian (15.9-11.5 Ma) |
HEMI |
Hemingfordian (19-15.9 Ma) |
ARIK |
Arikareean (30-19 Ma) |
EHMP |
Early Hemphillian (9-5.5 Ma) |
LBAR |
Late Barstovian (14.8-11.5 Ma) |
LARK |
Late Arikareean (24-19 Ma) |
EARK |
Early Arikareean (30-24 Ma) |
BACL |
Barstovian/Clarendonian (15.9-9 Ma) |
HEBA |
Hemingfordian/Barstovian (19-11.5 Ma) |
ARHE |
Arikareean/Hemingfordian (30-15.9 Ma) |
WHAR |
Whitneyan/Arikareean (32.2-19 Ma) |