The Age of Fishes began with mass death, fossil database reveals https://phys.org/news/2026-01-age-fishes-began-mass-death.html

#MassExtinction triggered the early radiations of jawed vertebrates and their jawless relatives https://www.science.org/doi/10.1126/sciadv.aeb2297

"from this biological havoc, known as the Late #Ordovician Mass #Extinction, came an unprecedented richness of vertebrate life. One group came to dominate all others, putting life on the path to what is known today as jawed #vertebrates... they only became dominant because this happened"