Hi I'm a preserved fossil I used to be a Allosaurus dinosaur
I'll be using a time machine to show you how i was a dinosaur to a fossil
I was alive during the late Jurassic period and lived in Africa which was warm, moist, some tropical breezes, lots of water.
I was looking for food and I got stuck in the mud then as time passed on I started decaying
All this water gave the previously hot and dry climate a humid and drippy subtropical feel. Dinosaurs species were alive during this time.
I started decaying and then layers of rocks and mud started covering my body which eventually become sedimentary rocks.
Soon after that I was just organisms stick in the sedimentary cement which turned into fossils after 10,000 years.
I'm about 150 to 144 years old I can't keep count I'm very old. Scientist know my age because of radioactive dating which is by observing the fossil and its decaying products also its known decay rates and the way the rocks are positioned in the dirt.
Paleontologists look for clues preserved in the fossilized bones, teeth, eggs, footprints, teeth marks, leaves, and even dung of ancient organisms.
Some of my dinosaur friends have been discovered in several places around the globe, including Portugal, Africa, Siberia and Tanzania.