Why didn’t the small post apocalypse survivor dinosaurs just refill the niches? Did the asteroid alter the planet in some way fundamentally different than the prior 200M years?
Edit: (collaborative clarification with my 5yo, with paraphrasing): Birds are boring dinosaurs. Why didn’t the big dinosaurs (non bird) come back? Why are there no mammal-sized (non bird) dinosaurs? (e.g., mouse through elephant-sized or even whale size)
In: 77
Simply put, there were environmental changes, and some creatures were not-as-well-adapted as some others. Those that weren’t died off, those that were able to adapt thrived.
The thriving, adapted organisms out-competed the ill-adapted ones.
Latest Answers