fossil
A fossil is an imprint or bones of a plant or an animal that lived long ago.
Example Sentence:
Scientists use fossils to help them know what dinosaurs really looked like.
1.http://farm2.static.flickr.com/1434/540781261_96a01942ee.jpg 2. http://farm4.static.flickr.com/3271/2641243728_3d5ff45f64.jpg 3.http://www.flickr.com/photos/cobalt/2262117842