The Cretaceous-Tertiary Event, during which non-avian dinosaurs became extinct, occurred approximately how long ago?

🎲 Try a Random Question  |  Total Questions in Quiz: 124  |  🧠 Study this quiz with Flashcards
This question is part of a full practice quiz:
CSET Foundational-Level Practice Test 2 - General — practice the complete quiz, review flashcards, or try a random question.


The Cretaceous-Tertiary Event, during which non-avian dinosaurs became extinct, occurred approximately how long ago?