My statement had nothing to do with age or chronology. The conundrum is presented is why would God create and then eliminate a significant number of species outside of the framework of theistic evolution?
Some things we do not know for certain. In fact, science estimates mankind has less than 1% of all knowledge.
Dinosaurs could’ve destroyed themselves. How and why they became extinct is really irrelevant to the repetitive nature of man’s problems today. All will be known one day.