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wincman

Another Brule Jaw Fragment

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wincman

Another jaw fragment from the Brule Fm. of Dakota.  Oreodont ??  Thanks.  About 2 1/2 "  long.  IMG_6326.thumb.JPG.ccfc00bc3ee8d86172a02586d41ee216.JPG

IMG_6327.JPG

IMG_6328.JPG

IMG_6329.JPG

IMG_6330.JPG

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jpc

I think so

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PalaeoArt
4 hours ago, jpc said:

I think so

Hey @jpc Just a thought, but wondering whether another option might be the lower jaw of a mesohippus (albeit the crowns are fairly worn down). The ridge of the side of the crown was the feature that draw me to that option.

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rfarrar

I second the Mesohippus/Miohippus ID.

Bob

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jpc

let me check... I have a few minutes of down time til the end of the workday...

 

Hmmmm... seems Scott and Jepsen do not have  figures of the chewing surfaces of horses and oreodonts.  

 

Looking at an oreodont jaw, yeah, you might be right.  Merycoidodon doesn't have such a strong cingulum.  Beyond that, I amnot very familiar with horse lower jaws.  

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jpc
2 minutes ago, rfarrar said:

I second the Mesohippus/Miohippus ID.

Bob

I'll go with what Bob says.  he knows better.  

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wincman

Thanks again for sharing your expertise.  Steve

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Nimravis

I agree with Mesohippus

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