2007-02-24 09:54:12 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
Here's a chart that shows the time intervals during which different kinds of dinosaurs lived: http://cas.bellarmine.edu/tietjen/Evolution/Dinos/fig1.htm
They first appeared in the Late Triassic, about 230 million years ago and they existed until 65 million years ago.
http://www.enchantedlearning.com/subjects/dinosaurs/allabout/Extremes.html
An article about 230 million year old dinosaur fossils found in Madagascar: http://www.enchantedlearning.com/subjects/dinosaurs/news/Oldest230.shtml
2007-02-24 13:55:48 · answer #1 · answered by luka d 5 · 0⤊ 0⤋
The dinosaurs became extinct (died out) 65 million years ago.
How long ago a dinosaur was 'born' depends on the dinosaur and when he lived. Dinosaurs ruled the earth for almost two million years. So, you would have to carbon date the dinosaur you have in question to discover exactly when it was "born.".
SCIENCE TEACHER
2007-02-24 18:13:59 · answer #2 · answered by CAROL P 4 · 0⤊ 0⤋
Dinosaurs were vertebrate animals that dominated terrestrial ecosystems for over 160 million years, first appearing approximately 230 million years ago. At the end of the Cretaceous Period, approximately 65 million years ago, a catastrophic extinction event ended dinosaurs' dominance on land.
2007-02-25 01:05:01 · answer #3 · answered by ♥ ΛDIƬΥΛ ♥ ııllllııllıı 6 · 0⤊ 0⤋
Yesterday
2007-02-24 18:28:52 · answer #4 · answered by S B 2 · 0⤊ 0⤋
some million years ago
plz bring them back Hardy!
i want to see them once
2007-02-25 07:37:25 · answer #5 · answered by Anonymous · 0⤊ 0⤋
i think million
2007-02-24 18:09:00 · answer #6 · answered by Pistonsfan101 5 · 0⤊ 1⤋