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Latest Placodermi Stories

Vertebrate Study Reveals The Evolution Of The Face
2014-02-13 09:19:21

[ Watch the Video: Animation Sequence of Romundina Fish Fossil ] Brett Smith for redOrbit.com - Your Universe Online Faces allow us to recognize each other almost instantaneously – so much so that they are the primary feature on our driver’s licenses and other identification cards. A study published on Wednesday in the journal Nature has revealed new details on the evolution of the jaw – a major defining structure in the evolution of the face. In the study, a team of...

Using Synchrotron X-rays To Put Flesh On The Bones Of Ancient Fish
2013-06-13 15:53:46

European Synchrotron Radiation Facility Swedish, Australian and French researchers present for the first time miraculously preserved musculature of 380 million year old armored fish discovered in north-west Australia. This research will help scientists to better understand how neck and abdominal muscles evolved during the transition from jawless to jawed vertebrates. The scientific paper describing the discovery is published today in the journal Science. The team of scientists who...

Ancient Fossils Of Tough Fish Shed Light On Evolution Of Four-Footed Animals
2013-03-28 08:08:22

April Flowers for redOrbit.com - Your Universe Online Describing life in the Devonian period in what is now northern Canada, Dr. Ted Daeschler of Drexel University said, "We call it a 'fish-eat-fish world,' an ecosystem where you really needed to escape predation.” The famous fossil fish species Tiktaalik roseae lived in this environment 375 million years ago. Daeschler, associate professor at Drexel University in the Department of Biodiversity, Earth and Environmental Science,...

Researchers Find Origins Of Teeth Much Older Than Previously Believed
2012-10-18 12:57:12

Michael Harper for redOrbit.com — Your Universe Online It´s likely the question “how long have humans had teeth?” has never entered into many normal and sober minds. Scientists and, more specifically, odontologists, are a different breed, however, and have wondered about the origins of teeth for many years. Now, thanks to a particle accelerator and a very, very dead fish, scientists have concluded that teeth may be much older than they had previously assumed....

2011-07-07 00:38:56

New data on the initial diversification of jaws sheds light on early vertebrate feeding ecology More than 99 per cent of modern vertebrates (animals with a backbone, including humans) have jaws, yet 420 million years ago, jawless, toothless armour-plated fishes dominated the seas, lakes, and rivers. There were no vertebrates yet on land and the recently evolved jawed fishes were minor players in this alien world, some sporting unusual jaw shapes and structures that bear little physical...

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2010-05-18 07:23:07

Event of unknown origin occurred as first vertebrates tested land A mass extinction of fish 360 million years ago hit the reset button on Earth's life, setting the stage for modern vertebrate biodiversity. The mass extinction scrambled the species pool near the time at which the first vertebrates crawled from water towards land. Those few species that survived the bottleneck were the evolutionary starting point for all vertebrates--including humans--that exist today, according to results of a...

2009-07-13 13:26:42

The mode of reproduction seen in modern sharks is nearly 400 million years old. That is the conclusion drawn by Professor Per Erik Ahlberg, Uppsala University, from his discovery of a so-called "clasper" in a primitive fossil fish earlier this year. The research results are published today in Nature.In February this year, a paper published in Nature by a team of Australian and British researchers showed that placoderms, a group of ancient fishes that died out more than 350 million years ago,...

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2009-02-25 18:00:00

New research published Wednesday shows that sex has been around for much longer than many scientists had previously believed, with internal fertilization prevalent among prehistoric fish living on tropical reefs during the Devonian period 380 million years ago.The study reveals new insight on the reproductive history of all jawed vertebrates, including humans."It shifts how we think about how reproduction evolved. You're a jawed vertebrate and I'm a jawed vertebrate, so this is our own...

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2008-05-29 08:45:00

Scientists in Australia reported Thursday they had discovered the remains of the oldest vertebrate mother ever found. The fossilized 375-million-year-old placoderm fish, preserved with an embryo still attached with an umbilical cord, was found in the Gogo area of northwest Australia.      The fossil fish is the oldest-known example of a mother giving birth to live young, and pushes back the emergence of this reproductive technique by some 200 million...

2006-11-29 15:01:20

By Jeremy Manier, Chicago Tribune Nov. 29--A fearsome mega-predator of the ancient seas had the most powerful jaws of any fish that ever lived, according to a new study that makes even the biggest great white shark seem like a slack-jawed weakling. The new report by scientists at the Field Museum and the University of Chicago offers a unique window into the bizarre aquatic world of 400 million years ago, when the conquest of dry land by animals had barely begun and the first jawed...