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 | South American Land Mammal Ages | |||
|---|---|---|---|---|---|
| 1.4 | |||||
| 1.7 | |||||
| Neogene | Pliocene | Piacenzian | Blancan | Vorohuean/Uquian | 2.58 * |
| Chapadmalalan | 2.9 * | ||||
| Zanclean | 3.6 | ||||
| Montehermosan | 3.7 * | ||||
| Hemphillian | 4.7 | ||||
| Huayquerian | 4.9 * | ||||
| Miocene | Messinian | 5.333 | |||
| Tortonian | 7.246 | ||||
| Chasicoan | 7.9 * | ||||
| Clarendonian | 9.4 | ||||
| Mayoan | 9.9 * | ||||
| Laventan | 10.9 * | ||||
| Serravallian | 11.63 | ||||
| Barstovian | 12.5 | ||||
| Colloncuran | 13.7 * | ||||
| Langhian | 13.82 | ||||
| Friasian | 15.4 * | ||||
| Burdigalian | 15.98 | ||||
| Santacrucian | 16.2 * | ||||
| Hemingfordian | 16.3 | ||||
| Colhuehuapian | 17.4 * | ||||
| Arikareean | 18.5 | ||||
| Aquitanian | 20.44 | ||||
| Deseadan | 20.9 * | ||||
| 23.03 * | |||||
| 28.9 | |||||
| 29.5 | |||||