News tagged with fossil evidence

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Tracking viruses back in time

How long have viruses been around? No one knows. Scientists at Portland State University have begun taking the first steps toward answering this question.

Sep 06, 2010
4.9 / 5 (11) 1 | with audio podcast

Farming to blame for our shrinking size and brains

(PhysOrg.com) -- At Britain's Royal Society, Dr. Marta Lahr from Cambridge University's Leverhulme Centre for Human Evolutionary Studies presented her findings that the height and brain size of modern-day ...

Jun 15, 2011 weblog
3.2 / 5 (15) 68 | with audio podcast

Signs point to sponges as earliest animal life

(PhysOrg.com) -- Even Charles Darwin was puzzled by the apparently sudden appearance in the fossil record of a great variety of multicellular creatures — a rapid blossoming known as the Cambrian explosion. ...

Feb 04, 2009
4.3 / 5 (11) 20

Jaws -- 4 million BC

It might sound like a mashup of monster movies, but palaeontologists have discovered evidence of how an extinct shark attacked its prey, reconstructing a killing that took place 4 million years ago.

Mar 16, 2010
4.7 / 5 (9) 0 | with audio podcast

Getting a leg up on whale and dolphin evolution

When the ancestors of living cetaceans—whales, dolphins and porpoises—first dipped their toes into water, a series of evolutionary changes were sparked that ultimately nestled these swimming mammals into ...

Sep 24, 2009
3.9 / 5 (8) 0