1.75 - 0.4 Ma

The definition of this interval in the timescale South American Land Mammal Ages is taken from the following source:

• F. J. Prevosti, C. O. Romano, A. M. Forasiepi, S. Hemming, R. Bonini, A. M. Candela, E. Cerdeño, M. C. Madozzo Jaén, P. E. Ortiz, F. Pujos, L. Rasia, G. I. Schmidt, M. Taglioretti, R. D. E. MacPhee, and U. F. J. Pardiñas. 2021. New radiometric 40Ar–39Ar dates and faunistic analyses refine evolutionary dynamics of Neogene vertebrate assemblages in southern South America. Scientific Reports 2021(11):9830 view

There are intervals in 8 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Calabrian age, Pleistocene epoch, Chibanian age
• Cenozoic Subepochs: Middle Pleistocene subepoch, Early Pleistocene subepoch
• Cenozoic Subepochs of Southern Europe: Ionian subepoch
• Neogene Mammal Ages of China: Nihewanian age
• North American Land Mammal Ages: Blancan age, Irvingtonian age
• North American Mammal Subages/Zones: Cudahyan subage, Sappan subage, Senecan subage, Rexroadian subage
• Calcareous Nannoplankton Zones: NN19 zone, NN20 zone
• Cretaceous-Cenozoic of New Zealand: Castlecliffian age, Wanganui epoch, Nukumaruan age

This interval is used in the definition of 59 collections

A total of 5180 collections with 56229 occurrences lie within this time span