He also attended lectures at the Royal School of Mines by Thomas Henry Huxley, Edward Forbes, and other notable scientists.

[3] In 1859, Seeley began studies at Sidney Sussex College, Cambridge, and worked as an assistant for Adam Sedgwick at the Woodwardian Museum.

Seeley determined that dinosaurs fell into two great groups, the Saurischia and the Ornithischia, based on the nature of their pelvic bones and joints.

Seeley's division, however, has stood the test of time, though the birds have subsequently been found to descend, not from the "bird-hipped" Ornithischia, but from the "lizard-hipped" Saurischia.

... he will be best remembered, perhaps, for the wonderful collections he made in the Karoo Beds of South Africa and the resulting exhibition in the Natural History branch of the British Museum of the remarkable skeleton of Pareiasaurus[8] and numerous other Anomodont reptiles ....[9] - see Alfred Brown