“Geologically Calibrated Mammalian Tree Implicates Increased Substitution Rate and C4 Grass Emergence in Biodiversity Expansion and Human Evolution”

https://pubmed.ncbi.nlm.nih.gov/38116126

A geologically calibrated mammalian tree suggests that increased base substitution rate and emergence of C4 grasses since 20 million years may have contributed to biodiversity expansion, including adaptive radiation leading to Homo sapiens evolution and Quaternary climatic changes.