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ynot

Unknown phalanx from Sharktooth hill

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ynot

Hey all I found this little phalanx(?) at Sharktooth Hill.

Can You help Me identify it?

Scale bar is 2 cm.

5a0a65d80d8bf_unknownphalange.thumb.jpg.9eb8e0a2a9bd22cb2649493d6ba23533.jpg

 

Thank Y'all for the help.

Tony

 

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Dave (POM) Allen

looks like a pinniped

 

pinniped-sample-page-1.jpg

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doushantuo

from Wyss:

fernariistlanthc.jpg

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Mike from North Queensland

I would compare it to turtle as well.

 

Mike

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ynot

Hey @Boesse Do You have an idea on this one?

Thanks,

Tony

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ynot
13 minutes ago, Boesse said:

Not a pinniped - this is probably a cetacean phalanx owing to the lack of clear synovial articular surfaces.

Thanks for the identification Bobby!

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doushantuo

yes,indeed

Cetaceans can suffer from synovial joint disease,I noticed("non-inflammatory arthritis")

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Boesse

Not within their flippers, though. Aside from the shoulder joint, all other joints in a cetacean flipper are fibrocartilage/nonsynovial.

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siteseer
On 11/13/2017 at 9:19 PM, Mike from North Queensland said:

I would compare it to turtle as well.

 

Mike

 

Hi Mike,

I was thinking sea turtle as a possibility too but would expect both ends to be more pitted as a sign of a site of continued bone growth - can be difficult to distinguish from postmortem wear.  Bobby's probably right but I would go ahead and see if I could find some images of sea turtle flipper bones.

 

Jess

 

 

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