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)
|