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Fused radius-ulna


DE&i

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Picked up a Bison sp Radius from a recent organised field trip below.

59ab0d8089c5c_Bisonspradius.jpg.34bb1da80a521ca8e63f39d4515006f1.jpg

Showed and compared with another almost identical (Devensian stage) Bison sp fused Radius-Ulna, both bones are (Devensian stage) (25,000 years ago) in age.

59ab0d7d86007_Bisonspradiusulnatopbone1e(3).jpg.9c7cc55208dbd7f282a9398d709573e4.jpg59ab0d7c06288_Bisonspradiusulnatopbone1e(1).jpg.39f2cbe810a889ca05c13e3ec5fe6c41.jpg59ab0d7a7ece7_Bisonspradiusulna1b.jpg.64a18fbe2cd941676aa3d6b4ead6a4ef.jpg

Would you know @Harry Pristis what these markings (close up photos) would indicate please on the Bison sp Radius below.

59ab0d744e807_Bisonspradius1g(1).jpg.c8f5841f6a645c7a0ea64e4e541389ca.jpg59ab0d75e55ec_Bisonspradius1g(2).jpg.e0b5a740683c19a02ca8794a05bed7e2.jpg59ab0d7773b26_Bisonspradius1g(3).jpg.75a72c2a1554508a49717433a82c3160.jpg

 

 

  • I found this Informative 1

Regards.....D&E&i

The only certainty with fossil hunting is the uncertainty.

https://lnk.bio/Darren.Withers

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10 hours ago, Harry Pristis said:

 

Isn't that the fusion scar between the radius and ulna?

 

I’ve no idea I’m afraid, would this suggest the Ulna was not completely fused as shown with the other Radius-Ulna.

Regards.....D&E&i

The only certainty with fossil hunting is the uncertainty.

https://lnk.bio/Darren.Withers

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On 03/09/2017 at 8:17 PM, Harry Pristis said:

Yes.  These two are separate bones embryologically.  They fuse (ankylose) as they approach adulthood.

Very pleased with the additional information @Harry Pristis thank you very much.

Regards.....D&E&i

The only certainty with fossil hunting is the uncertainty.

https://lnk.bio/Darren.Withers

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