Geology
Mary Anning Georges  Her discoveries of Ichthyosaurus
and the first plesiosaur gained her recognition and respect
among paleontologist of her day despite her limited
education and lack of social status.  She is credited in
finding many of the best fossil examples of her time.
Georges Cuvier who used Georges’ fossils to help
advance his theories of fossils being the remains of extinct
species.  Cuvier believed that the earth was very old and
that mass extinction of species had occurred on various
occasions, a phenomenon he referred to as “revolutions”.