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

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International Chronostratigraphic TimescaleNorth American Land Mammal AgesNorth American Mammal Subages/Zones
1.4
NeogenePliocenePiacenzianBlancanSenecan/Rexroadian2.58
Zanclean3.6
HemphillianLate Hemphillian/late Early Hemphillian/early Early Hemphillian4.7
MioceneMessinian5.333
Tortonian7.246
ClarendonianLate Clarendonian/Early Clarendonian9.4
Serravallian11.63
Barstovianlate Late Barstovian/early Late Barstovian/Early Barstovian12.5
Langhian13.82
Burdigalian15.98
HemingfordianLate Hemingfordian/Early Hemingfordian16.3
Arikareeanlate Late Arikareean/early Late Arikareean/late Early Arikareean/early Early Arikareean/Harrisonian18.5
Aquitanian20.44
23.03 *
23.1
29.5