W. W. Bishop, G. R. Chapman, A. Hill, and J. A. Miller, Succession of Cainozoic vertebrate assemblages from the northern Kenya Rift Valley, pp.233389-394, 1971.

N. Blegen, The earliest long-distance obsidian transport: Evidence from the Stone Age Sibilo School Road Site, Baringo, Kenya, J. Hum. Evol, pp.1031-1050, 2017.

R. G. Bromley and A. A. Ekdale, Composite ichnofabrics and tiering of burrows, Geological Magazine, pp.12359-65, 1986.

C. J. Campisano, A. S. Cohen, J. R. Arrowsmith, A. Asrat, A. K. Behrensmeyer et al., The Hominin Sites and Paleolakes Drilling Project: Acquiring High-Resolution, 2017.

G. Chapman and M. Brook, Chronostratigraphy of the Baringo Basin, Kenya. Geological Society of London Special publication, vol.6, issue.1, pp.207-2223, 1978.

G. R. Chapman, S. J. Lippard, M. , and J. E. , The stratigraphy and structure of the Kamasia Range, Jl geol. Soc. Lond, pp.135265-281, 1978.

A. Cohen, C. Campisano, R. Arrowsmith, A. Asrat, A. K. Behrensmeyer et al., , pp.211-227, 2016.

S. De-schepper, P. L. Gibbard, U. Salzmann, and J. Ehlers, A global synthesis of the marine and terrestrial evidence for glaciation during the Pliocene Epoch, EarthScience Reviews, 2014.

A. Deino, L. Tauxe, M. Monaghan, D. , and R. , Ar-40/Ar-39 age calibration of the lithomagnetic and paleomagnetic stratigraphies of the Ngorora Formation, J. Geol, vol.98, issue.4, pp.567-587, 1990.

A. L. Deino and A. Hill, Ar-40/Ar-39 dating of Chemeron Formation strata encompassing the site of hominid KNM-BC 1, Tugen Hills, Kenya, J. Hum. Evol, vol.42, issue.1-2, pp.141-151, 2002.

A. L. Deino and S. Mcbrearty, Ar-40/Ar-39 dating of the Kapthurin Formation, Baringo, Kenya, J. Hum. Evol, vol.42, issue.1-2, pp.185-210, 2002.

A. L. Deino, J. D. Kingston, J. M. Glen, R. K. Edgar, and A. Hill, Precessional forcing of lacustrine sedimentation in the late Cenozoic Chemeron Basin, Central Kenya Rift, and calibration of the Gauss/Matuyama boundary, Earth Planet. Sci. Lett, vol.247, issue.1-2, pp.41-60, 2006.

A. L. Deino, L. Tauxe, M. Monaghan, and A. Hill, Ar-40/Ar-30 geochronology and paleomagnetic stratigraphy of the Lukeino and lower Chemeron Formations at Tabarin and Kapcheberek, Tugen Hills, J. Hum. Evol, vol.42, issue.1-2, pp.117-140, 2002.

. A-c-c-e-p-t-e-d-m-a-n-u-s-c-r-i-p-t,

R. J. Fleck, J. F. Sutter, and D. H. Elliot, Interpretation of discordant 40Ar/39Ar age-spectra of Mesozoic tholeiites from Antarctica, Geochimica et Cosmochimica Acta, pp.4115-4147, 1977.

D. Garello, A. Deino, C. Campisano, J. Kingston, R. Arrowsmith et al., Geochemical characterization of tephra from the upper Chemeron Formation, Baringo Basin, Kenya, and correlations between outcrop and the Baringo-Tugen Hills-Barsemoi drill core, 2013.

J. T. Hagstrum, R. J. Fleck, R. C. Evarts, and A. T. Calvert, Paleomagnetism and Ar-40/Ar-39 geochronology of the Plio-Pleistocene Boring Volcanic Field: Implications for the geomagnetic polarity time scale and paleosecular variation, Phys. Earth Planet. Inter, pp.262101-115, 2017.

S. Harmand, J. E. Lewis, C. S. Feibel, C. J. Lepre, S. Prat et al., 3-million-year-old stone tools from Lomekwi 3, West Turkana, Nature, vol.3, issue.7552, p.310, 2015.
URL : https://hal.archives-ouvertes.fr/hal-01159189

A. Hill, Early hominid from Baringo, Kenya, Nature, vol.315, issue.6016, pp.222-224, 1985.

A. Hill, Late Miocene and Early Pliocne hominoids from Africa, pp.123-145, 1994.

A. Hill and S. Ward, Origin of the hominidae -the record of African large hominoid evolution between 14-my and 4-my, Yearb. Phys. Anthropol, pp.3149-83, 1988.

A. Hill, G. Curtis, R. Drake, L. E. Frostick, R. W. Renaut et al., Sedimentary stratigraphy of the Tugen Hills, Sedimentation in the African Rifts, pp.285-295, 1986.

A. Hill, R. Drake, L. Tauxe, M. Monaghan, J. C. Barry et al., Neogene palaeontology and geochronology of the Baringo Basin, Journal of Human Evolution, pp.14759-773, 1985.

A. Hill, S. Ward, A. Deino, G. Curtis, D. et al., Earliest Homo, Nature, vol.355, issue.6362, pp.719-722, 1992.

B. F. Jacobs and A. L. Deino, Test of climate-leaf physiognomy regression models, their application to two Miocene floras from Kenya, and Ar-40/Ar-39 dating of the late Miocene Kapturo site, Paleogeogr. Paleoclimatol. Paleoecol, vol.123, issue.1-4, pp.259-271, 1996.

C. B. Keller, B. Schoen, and K. M. Samperton, A stochastic sampling approach to zircon eruption age interpretation, Geochemical Persectives Letters, pp.831-866, 2018.

J. D. Kingston, A. L. Deino, R. K. Edgar, and A. Hill, Astronomically forced climate change in the Kenyan Rift Valley 2.7-2.55 Ma: implications for the evolution of early hominin ecosystems, J. Hum. Evol, vol.53, issue.5, pp.487-503, 2007.

M. R. Koymans, C. G. Langereis, D. Pastor-galan, and D. J. Van-hinsbergen, Paleomagnetism.org: An online multi-platform open source environment for paleomagnetic data analysis, Comput. Geosci, pp.93127-137, 2016.

S. C. Kuehn, D. G. Froese, P. A. Shane, I. , and I. P. The-intav-a-c-c-e-p-t-e-d-m-a-n-u-s-c-r-i, intercomparison of electron-beam microanalysis of glass by tephrochronology laboratories: Results and recommendations, Quat. Int, pp.24619-24666, 2011.

K. F. Kuiper, A. Deino, F. J. Hilgen, W. Krijgsman, P. R. Renne et al., Synchronizing rock clocks of Earth history, Science, vol.320, issue.5875, pp.500-504, 2008.

C. Lane, M. Haslam, M. Petraglia, P. Ditchfield, V. Smith et al., Cryptotephra from the 74 ka BP Toba super-eruption in the Billa Surgam caves, southern India, Quat. Sci. Rev, vol.30, pp.15-16, 2011.

C. S. Lane, B. T. Chorn, J. , and T. C. , Ash from the Toba supereruption in Lake Malawi shows no volcanic winter in East Africa at 75 ka, Proc. Natl. Acad. Sci. U. S. A, vol.110, issue.20, pp.8025-8029, 2013.

J. Laskar, P. Robutel, F. Joutel, M. Gastineau, A. Correia et al., A long-term numerical solution for the insolation quantities of the earth, Astron. Astrophys, pp.428261-285, 2004.
URL : https://hal.archives-ouvertes.fr/hal-00001603

J. Lee, K. Marti, J. P. Severinghaus, K. Kawamura, H. Yoo et al., A redetermination of the isotopic abundances of atmospheric Ar, Geochimica et Cosmochimica Acta, pp.704507-4512, 2006.

L. E. Lisiecki and M. E. Raymo, A Pliocene-Pleistocene stack of 57 globally distributed benthic delta O-18 records, Paleoceanography, vol.20, issue.2, 2005.

C. A. Lockwood, W. H. Kimbel, and D. C. Johanson, Temporal trends and metric variation in the mandibles and dentition of Australopithecus afarensis, J. Hum. Evol, vol.39, issue.1, pp.23-55, 2000.

D. J. Lowe, Tephrochronology and its application: A review, Quat. Geochronol, vol.6, issue.2, pp.107-153, 2011.

G. J. Mccall, B. H. Baker, and J. Walsh, Late Tertiary and Quaternary sediments of the Kenya Rift Valley, pp.191-220, 1967.

S. P. Mcpherron, Z. Alemseged, C. W. Marean, J. G. Wynn, D. Reed et al., Evidence for stone-tool-assisted consumption of animal tissues before 3.39 million years ago at Dikika, Ethiopia, pp.466857-860, 2010.
URL : https://hal.archives-ouvertes.fr/hal-00822407

K. W. Min, R. Mundil, P. R. Renne, and K. R. Ludwig, A test for systematic errors in Ar-40/Ar-39 geochronology through comparison with U/Pb analysis of a 1.1-Ga rhyolite, Geochim. Cosmochim. Acta, vol.64, issue.1, pp.73-98, 2000.

K. E. Minkara, D. M. Deocampo, N. M. Rabideaux, J. D. Kingston, A. L. Deino et al., Palaeogeography, Palaeoclimatology, Palaeoecology

E. M. Niespolo, D. Rutte, A. L. Deino, and P. R. Renne, Intercalibration and age of the Alder Creek sanidine Ar-40/Ar-39 standard, Quat. Geochronol, pp.39205-213, 2017.

J. G. Ogg, F. M. Gradstein, J. G. Ogg, M. D. Schmitz, and G. M. Ogg, Geomagnetic Polarity Time Scale, pp.85-113, 2012.

N. J. Pearce, W. T. Perkins, J. A. Westgate, and S. C. Wade, Trace-element microanalysis by LA-ICP-MS: The quest for comprehensive chemical characterisation of single, sub-10 mu m volcanic glass shards, Quat. Int, pp.276298-298, 2012.

K. E. Reed, A. L. Rector, and . ;-a-c-c-e-p-t-e-d-m-a-n-u-s-c-r-i-p-t-resources, African Pliocene paleoecology: Hominin habitats, Evolution of the Human Diet: The Known, the Unknown, and the Unknowable, pp.262-288, 2007.

J. Scott, First hominid from the Miocene (Lukeino Formation, Kenya), Comptes Rendus Acad. Sci. Ser II-A, vol.332, issue.2, pp.137-144, 2001.

M. J. Sier, C. G. Langereis, G. Dupont-nivet, C. S. Feibel, J. C. Joordens et al., The top of the Olduvai Subchron in a high-resolution magnetostratigraphy from the West Turkana core WTK13, hominin sites and Paleolakes Drilling Project (HSPDP), 2017.
URL : https://hal.archives-ouvertes.fr/insu-01534457

, Quat. Geochronol, pp.42117-129

M. J. Sier, . Palaeogeography, P. Palaeoclimatology, M. E. Smith, A. R. Carroll et al., Early Eocene carbon isotope excursions and landscape destabilization at eccentricity minima: Green River Formation of Wyoming, Earth and Planetary Science Letters, pp.403393-406, 2014.

B. Villmoare, W. H. Kimbel, C. Seyoum, C. J. Campisano, E. N. Dimaggio et al., Early Homo at 2.8 Ma from Ledi-Geraru, Science, vol.347, issue.6228, pp.1352-1355, 2015.

K. Westover, . Palaeogeography, P. Palaeoclimatology, T. D. White, B. Asfaw et al., Ardipithecus ramidus and the Paleobiology of Early Hominids, vol.326, pp.75-86, 2009.