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Jaw? II. Just when you thought it was safe...


MrR

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And so I return with another question about a particular, probably cetacean, bone. In my last adventure, we ascertained that a piece of bone, with cylindrical resemblances, was from a rib. With how little curve it had along it's length, I suspect it was from a large creature.


I also have another interestingly shaped/textured bone fossil from the same general, Miocene, area in Bakersfield. As you can see, the glued specimen is a bit over 150mm in length, and sits about 70mm wide(tall?). One side is very flat along the length of the piece. Since it has what appear to be termination points, I figure that a general ID for body position might be possible. This is where I again go to thinking a possible jaw part. Like perhaps the rear portion of a mysticete lower jaw? I know, there I go again. As I said, the texture is not smooth like the rib I was given. It's got a lot of bumps and shallow crags around the curved portions. Thanks ahead of time for any input on possible ID.  Cheers.

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    Tim    -  VETERAN SHALE SPLITTER

   MOTM.png.61350469b02f439fd4d5d77c2c69da85.png      PaleoPartner.png.30c01982e09b0cc0b7d9d6a7a21f56c6.png.a600039856933851eeea617ca3f2d15f.png     Postmaster1.jpg.900efa599049929531fa81981f028e24.jpg    VFOTM.png.f1b09c78bf88298b009b0da14ef44cf0.png  VFOTM  --- APRIL - 2015  

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"In every walk with nature one receives far more than he seeks."

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Just using general morphology to ID this may be a tall order. On the flat side, the exposed trabeculae show that the bone has been split, and that we cannot tell what shape it may originally have been.

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"There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant

“Try to learn something about everything and everything about something.” - Thomas Henry Huxley

>Paleontology is an evolving science.

>May your wonders never cease!

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Hey Brian, I have a whole box of STH bones you are more than welcome to rummage through and attempt to make into a jaw. :ighappy:  

There may actually be some unidentified jaw sections in there.

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?Mysticeti indet. Not possible to ID based on anything other than 1) it's mammalian bone and 2) it's big.

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