Natural history is a difficult thing to conceptualize. You’ve got eons of undocumented progress, like the evolution of many species. Take, for example, the Australopithecus, an ancient great ape ...
Fossils from a South African cave are 3.4 to 3.6m years old and walked the Earth at same time as east African relatives. Archaeologists in a structure above the entrance to Sterkfontein in 2005.