In the early 1970s, two teachers from the United Kingdom led field trips out to the Isle of Skye in Scotland to look at prehistoric rock formations. On one of these trips, Robert Savage, a professor ...

The beginning and end of each chunk of time in the geologic time scale is determined by when some species appeared or disappeared from the fossil record. When many species went extinct around the same ...

in which we have observed that representatives of three fossil species of the Homo genus—H. ergaster, H. neanderthalensis and archaic H. sapiens—have a proportion of the insertion zones of the ...

"The fossil records we studied suggest that riparian zones played a crucial role in stabilizing ecosystems after the extinction. Rivers and wetlands may have acted as refuges, providing more ...