Question

When did the last species of T-Rex die out

Answer 1

T. rex went extinct during the K-T mass extinction, about 65 million years ago. This extinction killed the remaining dinosaurs (not just T. rex) and many other animal and plant groups. This extinction was probably caused by a catastrophic asteroid colliding with Earth.

Answer 2

hey mate!!
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here is the answer...

Tyrannosaurus Rex became extinct 65 million years ago...