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The Ecological Context of Early Hominoid Evolution: Evidence from the Early Miocene Mammalian Fauna of the Kiahera Formation, Rusinga Island, Kenya

Hall, Abigail S; Jenkins, Kirsten; Lehmann, Thomas; Michel, Lauren A; Muteti, Samuel N; Peppe, Daniel J; McNulty, Kieran P (March 2025, American Journal of Biological Anthropology, Program and Abstracts)

Free, publicly-accessible full text available March 17, 2026
A biogeochemical perspective on pedogenesis from soils to paleosols

https://doi.org/10.1016/B978-0-323-99762-1.00094-2

Breecker, Daniel O; Michel, Lauren A; Rasmussen, Craig; Tabor, Neil J (January 2025, Elsevier)

Free, publicly-accessible full text available January 1, 2026
Catarrhine distribution throughout the Early Miocene Kisingiri Sequence on Rusinga Island, Kenya

Hall, Abigail S; Jenkins, Kirsten; Lehmann, Thomas; Michel, Lauren A; Muteti, Samuel N; Peppe, Daniel J; McNulty, Kieran P (October 2024, Journal of Vertebrate Paleontology, Program and Abstracts)

Full Text Available
Revised biostratigraphic considerations of the Early Miocene locality Mfangano Island, Kenya: Implications for Miocene catarrhine evolution and faunal turnover

Hall, Abigail S; Lehmann, Thomas; Michel, Lauren A; Peppe, Daniel J; Muteti, Samuel N; McNulty, Kieran P (June 2024, University of Michigan Papers on Paleontology)

Full Text Available
Assessment of pretreatment methods on CIA-K and CALMAG indices and the effects on paleoprecipitation estimates

https://doi.org/10.1016/j.palaeo.2022.111102

Michel, Lauren A.; Sheldon, Nathan D.; Myers, Timothy S.; Tabor, Neil J. (September 2022, Palaeogeography, Palaeoclimatology, Palaeoecology)

Full Text Available
Oldest evidence of abundant C ₄ grasses and habitat heterogeneity in eastern Africa

https://doi.org/10.1126/science.abq2834

Peppe, Daniel J; Cote, Susanne M; Deino, Alan L; Fox, David L; Kingston, John D; Kinyanjui, Rahab N; Lukens, William E; MacLatchy, Laura M; Novello, Alice; Strömberg, Caroline_A E; et al (April 2023, Science)

The assembly of Africa’s iconic C₄grassland ecosystems is central to evolutionary interpretations of many mammal lineages, including hominins. C₄grasses are thought to have become ecologically dominant in Africa only after 10 million years ago (Ma). However, paleobotanical records older than 10 Ma are sparse, limiting assessment of the timing and nature of C₄biomass expansion. This study uses a multiproxy design to document vegetation structure from nine Early Miocene mammal site complexes across eastern Africa. Results demonstrate that between ~21 and 16 Ma, C₄grasses were locally abundant, contributing to heterogeneous habitats ranging from forests to wooded grasslands. These data push back the oldest evidence of C₄grass–dominated habitats in Africa—and globally—by more than 10 million years, calling for revised paleoecological interpretations of mammalian evolution.
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