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The Evolution Of Jaws Based On A 325M-Year-Old Shark-Like

The Evolution Of Jaws Based On A 325M-Year-Old Shark-Like Fossil

April Flowers for redOrbit.com - Your Universe Online Despite having retained their basic "sharkiness" for millions of years, modern sharks have less to tell us about the early evolution of jawed vertebrates—including humans—than was...

Latest Vertebrate 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...

Ancient Eel-Like Chordates Linked To Evolution Of Human Skeleton
2013-10-17 07:59:04

redOrbit Staff & Wire Reports - Your Universe Online An international team of paleontologists has published new research in the journal Nature revealing that the human skeleton did not evolve from ancient predatory fossil fish, as previously believed. Rather, the human skeleton evolved as a way to protect against predators such as the conodont, extinct eel-like chordates that evolved tooth-like structures and tissues independently of other creatures, according to experts from...

Fossil Fish Reveals New Evolutionary Body Elongation Mechanism
2013-10-08 04:46:25

redOrbit Staff & Wire Reports - Your Universe Online A third, previously unidentified reason for the extreme elongation of snake and eel bodies has been discovered by a team of University of Zurich paleontologists who published their findings Monday in the journal Nature Communications. The lengthy, slender and flexible bodies possessed by these creatures have evolved many times independently in the over 500 million years of vertebrate animal history, the study authors explained....

Fish Relatives Surprise Scientists
2013-07-18 04:53:01

Susan Bowen for redOrbit.com - Your Universe Online Scientists have used genetic data to create a comprehensive evolutionary family tree, or phylogeny, for "spiny-rayed fish," a category that encompasses about a third of all living vertebrate species. They were quite surprised to find out just who was related to whom in the fish world. The researchers, who published their findings in the Proceedings of the National Academy of Sciences looked at 10 genes in more than 500 fish species...

2013-06-06 11:49:18

Efforts to restore sturgeon in the Great Lakes region have received a lot of attention in recent years, and many of the news stories note that the prehistoric-looking fish are "living fossils" virtually unchanged for millions of years. But a new study by University of Michigan researchers and their colleagues reveals that in at least one measure of evolutionary change–changes in body size over time–sturgeon have been one of the fastest-evolving fish on the planet. "Sturgeon...

2013-04-19 19:20:47

Fishes account for over half of vertebrate species, but while groups such as mammals, birds and reptiles have been fairly well understood by scientists for decades, knowledge about relationships among many types of fishes was essentially unknown — until now. A team of scientists led by Richard Broughton, associate professor of biology at the University of Oklahoma, published two studies that dramatically increase understanding of fish evolution and their relationships. They...

New Insight Into Evolution Offered From Unusual Anal Fin
2013-04-10 09:31:33

University of Manchester An unusual fossil fish that has fins behind its anus could have implications for human evolution according to a scientist at The University of Manchester. Dr Robert Sansom from the Faculty of Life Sciences identified the paired fins of Euphanerops, a fossil jawless fish that swam in the seas around 370 million years ago. The find makes the fish one of the first vertebrate to develop paired appendages such as fins, legs or arms. However, their positioning is...

Genome Sequencing Of The Sea Lamprey Completed By Researchers
2013-03-02 05:21:25

Brett Smith for redOrbit.com - Your Universe Online According to a report in the journal Nature Genetics, an international team of geneticists has announced the successful sequencing of the sea lamprey genome. The sea lamprey makes for an interesting genetic case from an evolutionary standpoint, being a jawless vertebrate that diverged from jawed vertebrates millions of years ago. “The sea lamprey is a primitive jawless vertebrate that diverged from other jawed vertebrates...

Study Reveals First Ever Images Of Early Tetrapod Backbone And How It Helped In Land Evolution
2013-01-14 08:07:38

[Watch Video: 3D X-Ray Images Of Early Tetrapod Backbone] Lawrence LeBlond for redOrbit.com - Your Universe Online Using high-energy X-rays and a new data extraction protocol, an international consortium of scientists have for the first time rendered a 3D model of a prehistoric tetrapod backbone. The new reconstruction has shed new light on how the early animals moved once they made it onto land. One of the main creatures studied was a fierce-looking ichthyostega that lived from 374...

Shark Brains Are Similar To Our Own
2012-10-31 12:58:10

Lee Rannals for redOrbit.com - Your Universe Online New research published in the journal Brain, Behavior and Evolution indicates that the infamous shark from the movie Jaws may have more in common with police chief Martin Brody than previously thought. The Australian government announced a new catch-and-kill policy for sharks last month after great white sharks killed five surfers and swimmers this past year. The government also said it would be funding research into other measures to...