Mary Anning
From Tardis Wiki, the free Doctor Who reference
Mary Anning was a palaeontologist, She was born in 1799.
The Fifth Doctor, Nyssa, and Tegan were present, in 1810, at the moment of her discovery of the ichthyosaurus. (PROSE: Amazing Fossil Fish)
She later met the Fourth Doctor and Leela in 1830. (AUDIO: The Primeval Design)