Humans' Earliest Known Ancestor May Have Been Tiny ... And Terrifying

The newly discovered creature is called saccorhytus and looks like something from an "Alien" film.
SMS
Humans' Earliest Known Ancestor May Have Been Tiny ... And Terrifying

If we go all the way back in your family tree, hundreds of millions of years before Homo sapiens got their start, our earliest known ancestor might have looked like something from the movie "Alien."

Researchers say they've found evidence of humans' earliest known ancestor — a millimeter-long, bag-like creature called saccorhytus.

Fossils from China showed saccorhytus likely got around by wriggling and had a mouth that could expand to engulf larger prey. It lived in shallow seabeds 540 million years ago.

Of course, there are a lot of evolutionary steps between you and saccorhytus.

The creature is thought to be the most primitive example of a deuterostome –– a biological category that led to fish with spines, which eventually led to humans.

Featured Stories
Daniel Kaluuya in "Get Out" movie

Jordan Peele's 'Get Out' Takes Critics And The Box Office By Storm

Jeff Sessions

Democrats And Republicans Want Russia Probe — Without Jeff Sessions

Sybrina Fulton and Tracy Martin speaking to Mary Mitchell about their new book.

5 Years After His Death, Trayvon Martin's Parents Speak Out

Want to see more stories like this?
Like Newsy on Facebook for More Sci/Health Coverage