1.1 - 0.31 Ma

The definition of this interval in the timescale Neogene North Pacific Diatom Biochronology is taken from the following source:

• Y. Yanagisawa and F. Akiba. 1998. Refined Neogene diatom biostratigraphy for the northwest Pacific around Japan, with an introduction of code numbers for selected diatom biohorizons. The Journal of the Geological Society of Japan 104(6):395-414 view

There are intervals in 11 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Calabrian age, Chibanian age, Pleistocene epoch
• 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: Irvingtonian age
• North American Mammal Subages/Zones: Sappan subage, Cudahyan subage
• South American Land Mammal Ages: Lujanian age, Ensenadan age
• Calcareous Nannoplankton Zones: NN20 zone, NN19 zone
• Planktic Foraminiferal Zones: G. ruber PRZ zone
• Geomagnetic Polarity Chrons: C1 chron
• Cretaceous-Cenozoic of New Zealand: Castlecliffian age, Wanganui epoch, Haweran age

This interval is used in the definition of 21 collections

A total of 2504 collections with 29233 occurrences lie within this time span