Late Hemphillian subage
9.4 - 4.7 Ma
The definition of this interval in the timescale North American Mammal Subages/Zones is taken from the following source:
- M. O. Woodburne. 1987. A prospectus of the North American Mammal Ages. In: Woodburne, M. O. (ed.), Cenozoic Mammals of North America. University of California Press, Berkelery, CA 285-290 view
There are intervals in 10 timescales which overlap this one. show
This interval is used in the definition of 76 collections
A total of 3414 collections with 33987 occurrences lie within this time span
International Chronostratigraphic Timescale | North American Mammal Subages/Zones | |||
---|---|---|---|---|
1.4 | ||||
Neogene | Pliocene | Piacenzian | Senecan/Rexroadian | 2.58 |
Zanclean | 3.6 | |||
Late Hemphillian/late Early Hemphillian/early Early Hemphillian | 4.7 | |||
Miocene | Messinian | 5.333 | ||
Tortonian | 7.246 | |||
Late Clarendonian/Early Clarendonian | 9.4 | |||
Serravallian | 11.63 | |||
late Late Barstovian/early Late Barstovian/Early Barstovian | 12.5 | |||
Langhian | 13.82 | |||
Burdigalian | 15.98 | |||
Late Hemingfordian/Early Hemingfordian | 16.3 | |||
late Late Arikareean/early Late Arikareean/late Early Arikareean/early Early Arikareean/Harrisonian | 18.5 | |||
Aquitanian | 20.44 | |||
23.03 * | ||||
23.1 | ||||
29.5 |