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Carboniferous amphibian limb bone?


Strepsodus

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Hi.  I found this in the British Coal Measures.  I think it is a limb bone.  Is it a limb bone?  If so, is it from a fish or an amphibian?

 

 

Thanks,

 

 

 

Daniel

 

 

image.thumb.jpg.c266e89141bc5f1d099d08581fc203ce.jpgimage.thumb.jpg.235a0ab329cc63658c0c5bbd66aeb9d7.jpg

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Daniel,
Sure looks like one (amphibian bone)  to me, ... femur or humerus?  Not sure. 

Excellent find, though. 

Regards,

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    Tim    -  VETERAN SHALE SPLITTER

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I agree with Tim. Very exciting find. Congratulations.

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~Charlie~

"There are those that look at things the way they are, and ask why.....i dream of things that never were, and ask why not?" ~RFK
->Get your Mosasaur print
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Some blown up shots:

 

image.jpg.4c5b2dc2fddba38b3a2c3d2a7d8fbc1f.jpg        image.jpg.418df309ca3e7010976b90c403606fcf.jpg

 

I suppose it is also possible that it is a finger bone, from a larger tetrapod.  :headscratch:

 

 

    Tim    -  VETERAN SHALE SPLITTER

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

John Muir ~ ~ ~ ~   ><))))( *>  About Me      

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23 minutes ago, Fossildude19 said:

Daniel,
Sure looks like one (amphibian bone)  to me, ... femur or humerus?  Not sure. 

Excellent find, though. 

Regards,

 

20 minutes ago, fossilized6s said:

I agree with Tim. Very exciting find. Congratulations.

Hi.  Thanks for the replies.  Do you think Rhizodont limb bone can be ruled out?

 

 

 

Thanks,

 

 

 

 

 

 

Daniel

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This looks like a femur of a creature that probably had well developed limbs, so that would rule Rhizodont. 

 

I would investigate Silvanerpeton or a similar species. 

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~Charlie~

"There are those that look at things the way they are, and ask why.....i dream of things that never were, and ask why not?" ~RFK
->Get your Mosasaur print
->How to spot a fake Trilobite
->How to identify a CONCRETION from a DINOSAUR EGG

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Hi.  Thanks for your help.  Is this line in the middle near to the end only seen in more developed limbs?

 

Thanks,

 

 

 

Daniel

 

 

image.jpg.98f92d8103ebd92f310fab62ccf24b0f.jpg

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6 minutes ago, Strepsodus said:

 

Hi.  Thanks for the replies.  Do you think Rhizodont limb bone can be ruled out?

Thanks,

Daniel

 

Daniel, 

 

Although I wouldn't completely rule out lobe finned fishes, I would lean more towards amphian on this one. 

Regards,

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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  

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

John Muir ~ ~ ~ ~   ><))))( *>  About Me      

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Your fossil looks so close to a ichthyostega femur it's scary. But these are from the Devonian. These creatures are thought to be the missing link from fish to Amphibians. And the evolution of the ball and socket joint gave these creatures a larger range of motion in their limbs to eventually walk, hop, run, etc. 

 

 

lobe-fin_fish_and_amphibians.gif

v17n2-tetrapods1.gif

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~Charlie~

"There are those that look at things the way they are, and ask why.....i dream of things that never were, and ask why not?" ~RFK
->Get your Mosasaur print
->How to spot a fake Trilobite
->How to identify a CONCRETION from a DINOSAUR EGG

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27 minutes ago, Fossildude19 said:

 

Daniel, 

 

Although I wouldn't completely rule out lobe finned fishes, I would lean more towards amphian on this one. 

Regards,

 

6 minutes ago, fossilized6s said:

Your fossil looks so close to a ichthyostega femur it's scary. But these are from the Devonian. These creatures are thought to be the missing link from fish to Amphibians. And the evolution of the ball and socket joint gave these creatures a larger range of motion in their limbs to eventually walk, hop, run, etc. 

 

 

lobe-fin_fish_and_amphibians.gif

v17n2-tetrapods1.gif

Hi.  Thanks for the replies.  Does anyone know of anyone who may be able to give a certain ID?

 

 

Thanks,

 

 

 

Daniel

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You could try to contact Dr. Jennifer Clack.  She has been responsive to other members with similar questions. :) 

Good luck. 

Tim

 

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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  

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

John Muir ~ ~ ~ ~   ><))))( *>  About Me      

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46 minutes ago, Fossildude19 said:

You could try to contact Dr. Jennifer Clack.  She has been responsive to other members with similar questions. :) 

Good luck. 

Tim

 

Thanks.  I'll let you know what she thinks it is.

 

 

Thanks,

 

 

 

 

Daniel

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Jarvik is a famous name,Strepsodus.

Although his views on tetrapod skull bone terminology is being debated

 

 

 

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3 minutes ago, doushantuo said:

Jarvik is a famous name,Strepsodus.

Although his views on tetrapod skull bone terminology is being debated

Hi.  Thanks for your help.

 

 

 

Daniel

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you can sometimes receive paywalled papers as pdf from the authors. their contact information is in the abstract which is free access.

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