North American Mammal Subages/Zones
The interval definitions in this timescale are derived from the following sources:
- 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
- J. Alroy. 2000. New methods for quantifying macroevolutionary patterns and processes. Paleobiology 26(4):707-733 view
- 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
- J. I. Raine, A. G. Beu, A. F. Boyes, H. J. Campbell, R. A. Cooper, J. S. Crampton, M. P. Crundwell, C. J. Hollis, and H. E. G. Morgans. 2015. Revised Calibration of the New Zealand Geological Timescale: NZGT2015/1. GNS Science Report 2012(39) view
There are 13 timescales which overlap this one. show
Interval boundaries marked with * have been interpolated based on the differences between the ages for international timescale boundaries quoted in the source and the currently accepted ages for those boundaries.
This timescale is used in the definition of 1032 collections
| International Chronostratigraphic Timescale | North American Mammal Subages/Zones | North American Land Mammal Ages | Ten Million Year Bins | Cretaceous-Cenozoic of New Zealand | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Quaternary | Holocene | Meghalayan | Saintaugustinean | Cenozoic 6 | Wanganui | Haweran | 0 | |||
| Santarosean | 0.0004 | |||||||||
| Northgrippian | 0.0042 | |||||||||
| Greenlandian | 0.0082 | |||||||||
| Pleistocene | Late Pleistocene | Sheridanian | 0.0117 | |||||||
| Rancholabrean | 0.014 | |||||||||
| Chibanian | 0.129 | |||||||||
| Cudahyan/Sappan | Irvingtonian | 0.21 | ||||||||
| Castlecliffian | 0.34 | |||||||||
| Calabrian | 0.774 | |||||||||
| Senecan/Rexroadian | Blancan | 1.4 | ||||||||
| Nukumaruan | 1.63 | |||||||||
| Gelasian | 1.8 | |||||||||
| Mangapanian | 2.4 | |||||||||
| Neogene | Pliocene | Piacenzian | 2.58 | |||||||
| Waipipian | 3 | |||||||||
| Zanclean | 3.6 | |||||||||
| Opoitian | 3.7 | |||||||||
| Late Hemphillian/late Early Hemphillian/early Early Hemphillian | Hemphillian | 4.7 | ||||||||
| Miocene | Messinian | Taranaki | Kapitean | 5.333 | ||||||
| Tongaporutuan | 7.2 | |||||||||
| Tortonian | 7.246 | |||||||||
| Late Clarendonian/Early Clarendonian | Clarendonian | 9.4 | ||||||||
| Southland | Waiauan | 11.04 | ||||||||
| Serravallian | Cenozoic 5 | 11.63 | ||||||||
| late Late Barstovian/early Late Barstovian/Early Barstovian | Barstovian | 12.5 | ||||||||
| Lillburnian | 13.05 | |||||||||
| Langhian | 13.82 | |||||||||
| Clifdenian | 15.1 | |||||||||
| Pareora | Altonian | 15.9 | ||||||||
| Burdigalian | 15.98 | |||||||||
| Late Hemingfordian/Early Hemingfordian | Hemingfordian | 16.3 | ||||||||
| late Late Arikareean/early Late Arikareean/late Early Arikareean/early Early Arikareean | Harrisonian | Arikareean | 18.5 | |||||||
| Otaian | 18.7 | |||||||||
| Aquitanian | 20.44 | |||||||||
| Landon | Waitakian | 21.7 | ||||||||
| Paleogene | Oligocene | Chattian | Cenozoic 4 | 23.03 | ||||||
| Monroecreekian | 23.1 * | |||||||||
| Geringian | 24.7 * | |||||||||
| Duntroonian | 25.2 | |||||||||
| Whaingaroan | 27.3 | |||||||||
| Rupelian | 27.82 | |||||||||
| Whitneyan | 29.5 | |||||||||
| Orellan | 31.8 | |||||||||
| Eocene | Priabonian | Late Chadronian/Middle Chadronian/Early Chadronian | Chadronian | Cenozoic 3 | 33.9 | |||||
| Arnold | Runangan | 34.6 | ||||||||
| Kaiatan | 36.7 | |||||||||
| Duchesnean | 37 | |||||||||
| Bartonian | 37.71 | |||||||||
| Bortonian | 39.1 | |||||||||
| Late Uintan/Early Uintan | Uintan | 39.7 | ||||||||
| Lutetian | Cenozoic 2 | 41.2 | ||||||||
| Dannevirke | Porangan | 42.6 | ||||||||
| Heretaungan | 45.7 | |||||||||
| Twinbuttean/Blacksforkian/Gardnerbuttian | Bridgerian | 46.2 | ||||||||
| Ypresian | 47.8 | |||||||||
| Mangaorapan | 48.9 | |||||||||
| Lostcabinian/Lysitean/Graybullian/Sandcouleean | Wasatchian | 50.5 | ||||||||
| Waipawan | 52 | |||||||||
| Cf3/Cf2/Cf1 | Clarkforkian | 54.9 | ||||||||
| Paleocene | Thanetian | Cenozoic 1 | Teurian | 56 | ||||||
| Ti6/Ti5/Ti4/Ti3/Ti2/Ti1 | Tiffanian | 56.2 | ||||||||
| Selandian | 59.2 | |||||||||
| To3/To2/To1 | Torrejonian | 60.9 | ||||||||
| Danian | 61.6 | |||||||||
| Pu3/Pu2/Pu1 | Puercan | 63.8 | ||||||||
| Cretaceous | Late Cretaceous | Maastrichtian | Cretaceous 8 | Mata | Haumurian | 66 | ||||
| Campanian | Cretaceous 7 | 72.1 | ||||||||
| Santonian | Cretaceous 6 | Piripauan | 83.6 | |||||||
| Raukumara | Teratan | 86.1 | ||||||||
| Coniacian | 86.3 | |||||||||
| Turonian | 89.8 | |||||||||
| Mangaotanean | 90.5 | |||||||||
| Arowhanan | 93.7 | |||||||||
| Cenomanian | Cretaceous 5 | 93.9 | ||||||||
| Clarence | Ngaterian | 95.2 | ||||||||
| Motuan | 99.5 | |||||||||
| Early Cretaceous | Albian | Cretaceous 4 | 100.5 | |||||||
| Urutawan | 103.3 | |||||||||
| Taitai | Korangan | 108.4 | ||||||||
| Aptian | Cretaceous 3 | 113 | ||||||||
| 117.5 | ||||||||||
| Barremian | Cretaceous 2 | 121.4 | ||||||||
| Hauterivian | 125.77 | |||||||||
| Valanginian | Cretaceous 1 | 132.6 | ||||||||
| Berriasian | 139.8 | |||||||||
| 145 | ||||||||||