Convergent evolution News

Convergent evolution: A new third way for eels and snakes

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An item in the usual science news reveals that snake and eel body plans have evolved separately many times over 500 million years.

My, my. Lotta years that.

And a 240 million year old fossil fish find shows a third way it could happen, according to reports:

A team of paleontologists from the University of Zurich headed by Professor Marcelo Sánchez-Villagra now reveal that a third, previously unknown mechanism of axial skeleton elongation characterized the early evolution of fishes, as shown by an exceptionally preserved form. Unlike other known fish with elongate bodies, the vertebral column of Saurichthys curionii does not have one vertebral arch per myomeric segment, but two, which is unique. This resulted in an elongation of the body and gave it an overall elongate appearance. “This evolutionary pattern for body elongation is new,” explains Erin Maxwell, a postdoc from Sánchez-Villagra’s group. “Previously, we only knew about an increase in the number of vertebrae and muscle segments or the elongation of the individual vertebrae.”

The researchers think the fish wasn’t as flexible as eels or snakes.

8 Replies to “Convergent evolution: A new third way for eels and snakes

  1. 1
    Robert Byers says:

    The bible says snakes lost their legs at the fall. They had legs but were cursed. Big snakes show evidence of once having legs. are snakes ever going to evolve legs?
    The bible allows great adaptation and change within biology.
    There is room for other mechanisms.

  2. 2
    Mung says:

    “The bible says snakes lost their legs at the fall”

    lol

    God help us.

  3. 3
    Mapou says:

    The bible says snakes lost their legs at the fall.

    I’ve read the Bible from cover to cover (I’ve read the book of Genesis many times) and I don’t remember reading this. Sorry. Care to quote chapter and verse, please?

  4. 4
    Mung says:

    Gen. 3:14 NIV

    So the LORD God said to the serpent, “Because you have done this, “Cursed are you above all livestock and all wild animals! You will crawl on your belly and you will eat dust all the days of your life.

  5. 5
    Robert Byers says:

    Oh I get it. Fall-legs. I wish I was that funny.
    the bible says snakes had to newly crawl and so its saying before that they walked. So legs. The big unique deal about snakes is that they have no legs unlike almost everyone else.
    The big ones show bones that prove they once did have legs.
    This being a very very rare example of a creature having vestigial remnants of a previous anatomical type of body.
    I evolution was true all creatures should be crawling with bits and pieces from previous anatomical body forms.
    Evolution isn’t true and so no bits.
    All snakes are of one kind and so from one kind came all types after the biblical flood.

  6. 6
    Mung says:

    Robert, does the Bible say, somewhere in all it’s pages, that snakes once had legs?

    If they never had legs, how could they have “lost” them at the fall?

  7. 7
    Robert Byers says:

    Mung
    It implied it to any reader. Having to newly crawl on the belly unlike everyone else, and eat dust, means there was a previous anatomical state.
    Any reader would conclude that.
    In fact a critic of the bible would say the storytellers were explaining to everyone WHY snakes uniquely had no legs! That skeptical point would be made.
    Then snakes have anatomical evidence for legs. just wiki.
    they are amongst the very few creatures with vestigial bits showing a previous anatomical bodyplan.
    Because they really did change as opposed to evolutions claims everyone did.
    Unless of coarse evolutionists are trying to say snakes are evolving legs right before our eyes! Stat tuned.

  8. 8
    JGuy says:

    OT:
    “Flower Fossils 100,000,000 Years Out of Place?”
    http://www.icr.org/article/7729/

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