I want to know the answer to the following question:
At what point did the Mesozoic era begin?
All the background I'm provided with is that "The era began in the wake of the Permian–Triassic extinction event, the largest well-documented mass extinction in Earth's history, and ended with the Cretaceous–Paleogene extinction event, another mass extinction which is known for having killed off non-avian dinosaurs, as well as other plant and animal species.". Is that enough to answer the question?
Answer: yes