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mikeymig

Big Miocene/Oligocene Mammal Jaw????

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mikeymig

I bought this jaw at a fossil show and the only info that came with it was "Badlands USA". The matrix looks Miocene Arikaree to me and not Oligocene but I'm not sure of course. Any information from a mammal/tooth collector will be appreciated. I have an idea of what it might be but I don't want to say anything until I hear from you all. 

Thanks, Mikey

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mikeymig

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MeargleSchmeargl

Looks mammal. Beyond that I haven't much of a clue.

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Tidgy's Dad

Looks typical Oligocene Badlands to me. 

Perhaps Leptomeryx?

Image result for oligocene mammal teeth

And i seem ti have missed the title word "Big" 

ooopps

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mikeymig
3 minutes ago, Tidgy's Dad said:

Looks typical Oligocene Badlands to me. 

Perhaps Leptomeryx?

Image result for oligocene mammal teeth

It would be the largest Leptomeryx in the world. ;)

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Tidgy's Dad

Oh, yes, forgot to look at your scale bar in the bottom pic! Hmmmm:doh!:

Got too excited looking at the top ones and foolishly thinking, "I know this!" 

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BMoore

Based on the first and last images I would guess Hyracodon from White River.

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mikeymig
12 minutes ago, BMoore said:

Based on the first and last images I would guess Hyracodon from White River.

Thank you for the reply but I'm thinking more likely an artiodactyl not a perissodactyl.

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ynot

@Harry Pristis may know.

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Fossildude19

Or @jpc

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rfarrar

Mike,

 

I think this is one of the large Miocene oreodonts. Something like Merycochoerus...

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jpc

Well, I can say this with great confidence:  It is right m2 and m3.  I am leaning towards a big Miocene oreo as well.  The preservation is quite Miocene-ish from this area.  I am comparing with a culbertsoni jaw in my grubby mitts and these two pieces of enamel I see in the mystery jaw are different enough.  I am not sure what oreodont jaws do going into the Miocene... do they develop an enamel ridge right here on m2?  Anyone have a copy of Schultz and Falkenbach laying around?    DSC05736.thumb.JPG.fcad2777464a7e9237715289960d04a3.thumb.JPG.4cf03b8ad372a1bdc752323a1a7b4b1f.JPG

 

 edit:  Schultz and Falkenbach is available as a pdf online.  No oreodonts have an extra bit of enamel where this guy does.  Maybe those are broken pieces that got squished into the tooth.  I am still going with a large Miocene oreodont... for now  

 

edit2:  The pointed cusps on m3, two of them to the left of my lower green square seem too thick to be oreodont.... camel?   OK, I am now going with Artiodactyl. That's all.  

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mikeymig

Thanks for the info so far. Maybe from this guy in my collection?

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