Did ever exist any animal whose shoulder girdle bones fused, like the hip bones?

Discussion in 'Biology & Genetics' started by Buckaroo Banzai, Sep 26, 2017.

  1. Buckaroo Banzai Mentat Registered Senior Member

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    332
    Even turtles have "floating" scapula, inside the shell/ribs!

    The "closest" thing I recall is birds having their clavicles fused into a furcula. But it's far from being really close to "frontal hips".
     
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  3. Jake Arave Icthyologist/Ethologist Registered Senior Member

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    146
    Prehistoric bony-fishes, and tetrapods as far as I'm aware. In tetrapods the cleithrum, clavicle, and interclavicle are all dermal the bone structure therefore linked to the caudal section of the head - in later evolutionary lines particularly with the appearance of unique digits, we begin to see a separation of fused-bone structures to suit a more efficient system of connected joints and sockets.
     
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