When the researchers sequenced the samples for genetic mutations and analyzed chromosome structure, they could trace the tumors» evolutionary histories, much as evolutionary biologists trace the origins of organisms back to their common ancestors based on fossils deposited in different geologic eras. (the-scientist.com)
It is the first new species to be described from the Marble Canyon site, part of the renowned Canadian Burgess Shale fossil deposit. (sciencedaily.com)
But the exceptional fossil deposits of the Cambrian period, some of which preserve fleshy bodies as well as the skeletons and bones that make up a typical fossil, al... (palaeontologyonline.com)