Brazilian researchers discovered a 237-million-year-old reptile fossil that might be a precursor to the dinosaur, though only the size of a small dog. As one of the world’s oldest fossils, they ...

This study presents a useful model of genetic drift by incorporating variance in reproductive success, aiming to address several apparent paradoxes in molecular evolution. However, some of the ...

Revised: This Reviewed Preprint has been revised by the authors in response to the previous round of peer review; the eLife assessment and the public reviews have been updated where necessary by the ...