Fossils may be 'earliest animals'
By JONATHAN AMOS - BBC
Added: Thu, 19 Aug 2010 03:28:02 UTC
Thanks to serendipitydawg for the link.
Tiny, irregularly shaped fossils from South Australia could be the oldest remains of simple animal life found to date.
The collection of circles, anvils, wishbones and rings discovered in the Flinders Ranges are most probably sponges, a Princeton team claims.
The rocks in which the forms were found are 640-650 million years old.
This is at least 70 million years older than some other claims for the most ancient animals in the fossil record.
The research, led by Professor Adam Maloof, is published in the journal Nature Geoscience.
"People have certainly proposed complex organisms, like eukaryotic algae or protists, and have even proposed animals in the form of trace fossils (preserved tracks) prior to the sponges that we report," he said.
"But I think we could confidently say that our sponges are the first somewhat convincing body fossils of an animal before the Ediacaran Period."
The Ediacaran, which came at the end of the last great global glaciation, produced indisputable evidence for animal life - slug-like organisms called Kimberalla, whose remains are found today in 555-million-year-old sediments in Australia and Russia.
... continue reading
Tweet
RELATED CONTENT
Modern culture emerged in Africa 20,000...
Thomas H. Maugh II - LA Times Comments
Modern culture emerged in southern Africa at least 44,000 years ago, more than 20,000 years earlier than anthropologists had previously believed
Modern Humans Blamed for Neanderthal...
Michael Balter - Wired Science Comments
New studies on volcanic glass show that a volcanic eruption once thought to be blamed for the demise of Neanderthals occurred after they were already gone.
A Bone Here, a Bead There: On the Trail...
John Noble Wilford - New York Times Comments
Who are we, and where did we come from?
Early Human Ancestor, Australopithecus...
- - ScienceDaily Comments
This is the tooth of a hominid embedded in a rock containing significant parts of a skeleton of an early human ancestor. The skeleton is believed to be the remains of "Karabo", the type skeleton of Australopithecus sediba, discovered at the Malapa Site in the Cradle of Humankind in 2009. (Credit: University of the Witwatersrand, Johannesburg)
Evolution, Humanism, and Conservation:...
Ryan Shaffer - The Humanist Comments
Interview with Richard Leakey, a world-renowned paleoanthropologist whose career has been marked by famous scientific finds, political office, and conservation efforts.
All dinosaurs may have had feathers
Meghan Rosen - Science News Comments
A newly discovered, nearly complete fossilized skeleton hints that all dinosaurs may have sported feathers.
MORE BY JONATHAN AMOS
LHC reports discovery of its first new...
Jonathan Amos - BBC News Science &... 24 Comments
The Large Hadron Collider (LHC) on the Franco-Swiss border has made its first clear observation of a new particle since opening in 2009.
African fossils put new spin on human...
Jonathan Amos - BBC News -Science &... 23 Comments
Features seen in the brain, feet, hands and pelvis of A. sediba all suggest this species was on the direct evolutionary line to us - Homo sapiens.
Fossil microbes give sulphur insight on...
Jonathan Amos - BBC News - Science &... 1 Comments
Tiny structures found in 3.4bn-year-old sandstones in Western Australia represent some of the oldest, best preserved evidence of life on Earth.
Cosmic distance record 'broken'
Jonathan Amos - BBC News, Science &... 40 Comments
A cataclysmic explosion of a huge star near the edge of the observable Universe may be the most distant single object yet spied by a telescope.
Planck telescope reveals ancient cosmic...
Jonathan Amos - BBC 20 Comments



Pew pew pew pew















Comments
Comment RSS Feed
Please sign in or register to comment
View Comments Page