Hemingfordian age
18.5 - 16.3 Ma
The definition of this interval in the timescale North American Land Mammal Ages is taken from the following source:
- A. D. Barnosky, M. Holmes, R. Kirchholtes, E. Lindsey, K.C. Maguire, A.W. Poust, M.A. Stegner, J. Sunseri, B. Swartz, J. Swift, N.A. Villavicencio and G. Wogan. 2014. Prelude to the Anthropocene: Two new North American Land Mammal Ages (NALMAs). The Anthropocene Review I(3):225-242 view
There are intervals in 8 timescales which overlap this one. show
This interval is used in the definition of 286 collections
A total of 642 collections with 6546 occurrences lie within this time span
International Chronostratigraphic Timescale | North American Land Mammal Ages | North American Mammal Subages/Zones | |||
---|---|---|---|---|---|
1.4 | |||||
Neogene | Pliocene | Piacenzian | Blancan | Senecan/Rexroadian | 2.58 |
Zanclean | 3.6 | ||||
Hemphillian | Late Hemphillian/late Early Hemphillian/early Early Hemphillian | 4.7 | |||
Miocene | Messinian | 5.333 | |||
Tortonian | 7.246 | ||||
Clarendonian | Late Clarendonian/Early Clarendonian | 9.4 | |||
Serravallian | 11.63 | ||||
Barstovian | late Late Barstovian/early Late Barstovian/Early Barstovian | 12.5 | |||
Langhian | 13.82 | ||||
Burdigalian | 15.98 | ||||
Hemingfordian | Late Hemingfordian/Early Hemingfordian | 16.3 | |||
Arikareean | late Late Arikareean/early Late Arikareean/late Early Arikareean/early Early Arikareean/Harrisonian | 18.5 | |||
Aquitanian | 20.44 | ||||
23.03 * | |||||
23.1 | |||||
29.5 |