Early Pleistocene (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Early Pleistocene" in English language version.

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doi.org

Mike Walker; et al. (December 2018). "Formal ratification of the subdivision of the Holocene Series/Epoch (Quaternary System/Period)" (PDF). Episodes. 41 (4). Subcommission on Quaternary Stratigraphy (SQS): 213–223. doi:10.18814/epiiugs/2018/018016. Retrieved 11 November 2019. This proposal on behalf of the SQS has been approved by the International Commission on Stratigraphy (ICS) and formally ratified by the Executive Committee of the International Union of Geological Sciences (IUGS).
P. L. Gibbard (17 April 2015). "The Quaternary System/Period and its major sub-divisions". Russian Geology and Geophysics. Special Issue: Topical Problems of Stratigraphy and Evolution of the Biosphere. 56 (4). Elsevier BV: 686–688. Bibcode:2015RuGG...56..686G. doi:10.1016/j.rgg.2015.03.015. Retrieved 13 November 2019.

P. L. Gibbard (17 April 2015). "The Quaternary System/Period and its major sub-divisions". Russian Geology and Geophysics. Special Issue: Topical Problems of Stratigraphy and Evolution of the Biosphere. 56 (4). Elsevier BV: 686–688. Bibcode:2015RuGG...56..686G. doi:10.1016/j.rgg.2015.03.015. Retrieved 13 November 2019.

P. L. Gibbard (17 April 2015). "The Quaternary System/Period and its major sub-divisions". Russian Geology and Geophysics. Special Issue: Topical Problems of Stratigraphy and Evolution of the Biosphere. 56 (4). Elsevier BV: 686–688. Bibcode:2015RuGG...56..686G. doi:10.1016/j.rgg.2015.03.015. Retrieved 13 November 2019.

Cohen, K. M.; Finney, S. C.; Gibbard, P. L.; Fan, J.-X. (January 2020). "International Chronostratigraphic Chart" (PDF). International Commission on Stratigraphy. Retrieved 23 February 2020.

Mike Walker; et al. (December 2018). "Formal ratification of the subdivision of the Holocene Series/Epoch (Quaternary System/Period)" (PDF). Episodes. 41 (4). Subcommission on Quaternary Stratigraphy (SQS): 213–223. doi:10.18814/epiiugs/2018/018016. Retrieved 11 November 2019. This proposal on behalf of the SQS has been approved by the International Commission on Stratigraphy (ICS) and formally ratified by the Executive Committee of the International Union of Geological Sciences (IUGS).