Paleontology

[,pælɪɒn'tɒlədʒɪ] or [,pelɪɑn'tɑlədʒi]

(noun.) the earth science that studies fossil organisms and related remains.

Typed by Essie--From WordNet

(n.) The science which treats of the ancient life of the earth, or of fossils which are the remains of such life.

Editor: Moore