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Ancient Fish Found Had Front And Back Legs

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Ancient Fish Found Had Front And Back Legs
[ Science]

A strange looking ancient fish that was discovered off the coast of Canada’s Ellesmere Island tells us more than we previously knew about the evolution of limbed animals and their connection to humans.

After further investigation of a 375 million-year-old fish known as Tiktaalik roseae, discovered in 2004, it was revealed that they may have developed rear legs before moving to land.

This newest information challenges previous theories that these limbs evolved only after the move onto land. [ See Images of Tiktaalik Fish Fossils ]

The fossil was definitely a fish, it had gills, scales and fins, however it also had four limbs that only amphibians such as reptiles and mammals possess, including a mobile neck and a robust rib cage.

Previously the only parts of Tiktaalik that researchers examined were its front portions. It is, after all a fossil and was a bit difficult to fully assemble. But once they dug further into the blocks of dirt and rock retrieved where this ancient fish was found, they discovered that the blocks contained more fossils than they had once thought. Plus, it took years to remove the rock surrounding the fragile fossils carefully and properly.

Tiktaalik possesses a broad flat head and sharp teeth and resembled a cross between a fish and a crocodile, estimated to have grown to a length of 9 feet (2.7 meters).

Surprisingly, they found Tiktaalik had big, strong pelvic bones with similarities to early tetrapods and further proof of the evolution theory that all of life came from the ocean.

“I was expecting to find a diminutive hind fin and pelvis,” study lead author Neil Shubin, a paleontologist at the University of Chicago, told LiveScience. “Seeing the whopping pelvis set me back a bit — I looked at it again and again, because I was quite surprised.”

Shubin cautioned that Tiktaalik is not the ancestor of all limbed vertebrates. It is for now, the closest known relative, “but not the sole, direct ancestor,” he said. “It is more like our closest cousin.”

Image via Wikimedia Commons #2 #3

Ancient Fish Found Had Front And Back Legs
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  • nonyabiz

    How can anybody believe this crap. Evolution is false. These creatures had no control over their cells and changing their dna just like we don’t. Go ahead and start living in waterand lets see if humans grow gills and fins again. I predict in a matter of minutes the first haman being who tries to live like afish will drown and wouldnt be able to pass on any dna changes even if they had the ability to change their dna. Use your brain people. Macroevolution is impossible. You can’t breathe on land with a partially functioning lung. How the hell then would a fish be able to survive on land with just a few cells that started as a mutation into a lung. It is ludicrous to even suggest such a thing as possible. You don’t need a Ph.D to think about this logically. Not would the fish not be able to survive how the hell would it cells/dna even know how to create an organ as complex as a lung to process oxygen. Its insantity to suggest random process would be able to develope such complexity.

  • http://www.tinavolpe-writer.com/ Tina Volpe

    All I will say to you is to offer proof – read, “The Origin of the Species” by Charles Darwin… then argue evolution.

    • Jeremiah

      You mean the false claims about birds on the Galapagos Islands that has already been proven false by science. So I am supposed to read “the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life” and believe the it’s true when it’s whole observational premise by Darwin has been proven false. It’s been over 200 years now and we’re still looking for transitional species to fill the gaps. “If my theory be true, numberless intermediate varieties, linking most closely all of the species of the same group together must assuredly have existed… Consequently evidence of their former existence could be found only amongst fossil remains” (The Origin of Species: A Facsimile of the First Edition Page 179) says Darwin but we’re struggling to find a handful of what we think might be and with only fossils assumptions of land walking or even diet are just fancied fairy tales. In “theory” there should be hundreds of thousands of transitional species. Darwin knew this and you would know it if you read the book as well. To sum it up, the media loves to bolster the idea of the greatest find since Lucy (disputed as well) but at the end of the day honest scientists have a hard time with it as well.

  • The true

    So see nonyabiz faith alone in the lord. Only what the Bible says and where no evidence for it. Also has never taken note of kinship (Paleontology).
    From excavations to be more truth than the spring shows faith itself.

  • Casey

    How is it in this day and age we have complete idiots, who haven’t read Darwin mind you, try and argue something they know absolutely NOTHING about?

    I just can’t believe I’m surrounded by this many morons.

  • The true

    You adapt to the environment. If the environment changed, you’re forced to change with it. The weak will become extinct the strong survive and reproduce.
    That was then and is still true.

  • http://www.tinavolpe-writer.com/ Tina Volpe

    Thanks True – it’s a little theory called “natural selection” :)

    • Theo Kamperman

      The strongest of the species for their ideal situation will survive and adapt. It takes a lot of time to complete. That is the natural selection.

  • The true

    The DNA are actually building blocks from which a body. A number of building blocks from which a body we find back in others bodies.
    Get the body Namaten the situation changed other needs and adjust itself automatically to the new situation. A building block that has become obsolete is replaced by another building block where at that time need for it.
    We find a kinship In the Paleontology at the Nautilius Pompilius back.
    The beast lives long history, more than 700 million years on this planet. (Samar and Palawan in the waters of the Philippines.