Accuracy of living dinoserous?

Question

when did the dinoserous live

Answer 1

Dinosaurs were the dominant vertebrate animals of terrestrial ecosystems for over 160 million years, from the late Triassic period (about 230 million years ago) to the end of the Cretaceous period (65 million years ago).

http://en.wikipedia.org/wiki/Dinosaur

Answer 2

Dinosaurs went extinct about 65 million years ago.  The earliest dinosaurs were about 230 million years old.

Answer 3

they never died    lol

Answer 4

With the exception of neornithine birds, dinosaurs became extinct 65.5 million years ago, not 65. :) They did arise in the late Triassic, by the Carnian stage or earlier.