Subcategories - Natural History
- Alexander von Humboldt
- Andrews Discovers the First Fossilized Dinosaur Eggs
- Barghoorn and Tyler Discover 2-Billion-Year-Old Microfossils
- Charles Darwin
- Comte de Buffon
- Conrad Gesner
- Dart Discovers the First Recognized Australopithecine Fossil
- Engelbert Kämpfer
- Ernst Haeckel
- Hominid Fossils Are Gathered in the Same Place for Concentrated Study
- John James Audubon
- John Wesley Powell
- Karl von Frisch
- Linnaeus
- Louis Agassiz
- Miller Discovers a Dinosaur Egg Containing the Oldest Known Embryo
- R. G. Collingwood
- Scientists Date a Homo Sapiens Fossil at Ninety-two Thousand Years
- Sir Edwin Ray Lankester
- Theophrastus Initiates the Study of Botany
- William Dampier
