A newly-described genus and species of trilobite is a unique example of an animal changing the form and apparent function of one of its morphological features...
Paleoanthropologists have discovered and examined the fossil lumbar vertebrae of Australopithecus sediba, a small hominin that lived about 2 million years...
19th and early 20th century postural reconstructions of Neanderthals, and particularly the extensive one of the partial skeleton of an elderly male Neanderthal...