Paleozooogy n. : The science of extinct animals, a branch of paleontology.

Example:


Taxonomy
fossils, Paleontology, organisms, rocks, paleontologists, evidence, animals, evolution, fossil record, September 17, family tree, science, history of life, mass extinctions, mammals, dinosaurs, palaeontology, humans.

Defination from the web:
Paleontology lies on the border between biology and geology, and shares with archeology a border that is difficult to define. ... As knowledge has increased, paleontology has developed specialized subdivisions, some of which focus on different types of fossil organisms while ...