Jaw versatility enabled the ecological success of amniotes, paleontologists find New research conducted by paleontologists from the Museum für Naturkunde Berlin (MfN) and Humboldt-Universität zu Berlin reveals a burst in jaw variety in the earliest amniotes—which includes the ancestors of all reptiles, birds and mammals. The international team led by former MfN doctoral student Dr. Jasper Ponstein analyzed more than 200 fossilized jaws from periods when tetrapods first adapted to life on land.
https://phys.org/news/2025-12-....jaw-versatility-enab