Tag Archives: Ancestors

Scientists discover an ancient wormlike creature that’s the ancestor of all animals – including us

by Doyle Rice, USA Today

Scientists have discovered a fossil of our earliest ancestor: a tiny, wormlike creature that lived about 555 million years ago, according to a new study. 

“It’s the earliest ‘bilaterian’ …. which is an organism with a front and back, two symmetrical sides and openings at either end connected by a gut,” scientists from the University of California–Riverside said in a statement.

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‘Ghost population’ of ancient humans may have mated with ancestors of modern humans

by Ryan W. Miller, USA Today

Ancestors of people living in what is today West Africa may have reproduced with a species of ancient humans unknown to scientists, new research suggests.

Scientists know Europeans mated with Neanderthals and people in Oceania with Denisovans, but a new study published Wednesday in the peer-reviewed journal Science Advances found that genetic variation within West African populations is best explained by the presence of a new ancient human species altogether.

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Why our ancestors drilled holes in each other’s skulls

by Robin Wylie, BBC Earth

Thousands of years ago, people were performing a form of surgery called “trepanation” that involves boring holes through a person’s skull

For a large part of human prehistory, people around the world practised trepanation: a crude surgical procedure that involves forming a hole in the skull of a living person by either drilling, cutting or scraping away layers of bone with a sharp implement.

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