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Irvingtonian

North American faunal stage according to the North American Land Mammal Ages chronology

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The Irvingtonian can be further divided into substages:

  • Irvingtonian I - approximately 1.9 MA TO 0.85 MA
  • Irvingtonian II - approximately 0.85 MA TO 0.4 MA
  • Irvingtonian III - approximately 0.4 MA TO 0.25 MA

The beginning of the Irvingtonian is defined by the first appearance of Mammuthus south of 55° N in North America, and the beginning of the succeeding Rancholabrean is defined by the first appearance of Bison.

In South America, it chronologically overlaps with the Uquian (partial), Ensenadan, and Lujanian in South American Land Mammal Ages.

Fauna

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Monotypic taxonTaxonomic group with only one subordinate taxonSpecies descriptionFormal description of a discovered speciesParaphylyType of taxonomic groupIUCN Red ListInventory of the global conservation status of biological speciesSubtropicsGeographic and climate zoneCommon nameName generally used for a taxon, group of taxa or organism(s)