An Era spanning 251.0 (±0.4) to 65.5 (±0.3) million years ago, comprising – from oldest to youngest – the Triassic, Jurassic and Cretaceous Periods.
An Era spanning 251.0 (±0.4) to 65.5 (±0.3) million years ago, comprising – from oldest to youngest – the Triassic, Jurassic and Cretaceous Periods.