Activity 4: It's a match! Directions: Column A are evidences while column B refers to certain timel them by writing the letter of your answer on the space before the number Column A 1. homo erectus 2. eukaryotes 3. zircon crystal 4. dinosaurs 5. trilobite fossils Column B A. 4.3 BYA B. 2.0 BYA C. Mesozoic Era D. 250 thousand years ago E. Cambrian Period