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White River fm. Mammal Teeth


PaleoNoel

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Hey everyone, I found these teeth in the White River fm of eastern Wyoming last summer and wanted to see what people on the forum thought they were.

1st is what I believe to be an oreodont tooth (possibly Merycoidodon). It's .8 cm wide and 1.5 cm from root to crown.

5d1587976a109_Whiteriverfm.Oreodonttooth1.thumb.JPG.b10a14e2579c38a418bc3603e93175d8.JPG

5d1587a029cf3_Whiteriverfm.Oreodonttooth2.thumb.JPG.124a46da9d92b8c8e57b46f2431d39c1.JPG

5d1587a83726f_Whiteriverfm.Oreodonttooth3.thumb.JPG.be71b97d513e2c35ba66a700fbf22fa5.JPG

2nd I believe may be a Poebrotherium tooth but I'm unsure. It's about .5 cm wide and .9 cm long.

5d15888546874_WhiteriverfmCameltooth1.thumb.JPG.f443c6a18fbf8c20cc3e733d1c0fcf75.JPG

5d15889b65f96_whiteriverfmcameltooth2.thumb.JPG.fe260f06e4987640a55378ca61c9691f.JPG

5d1588ad0fc6a_whiteriverfmcameltooth3.thumb.JPG.135ab0763c45b087534184dc1fbe560f.JPG

3rd may be from a Leptomeryx but I'm not sure. It's about .4 cm wide and .9 cm long.

5d1588d6d1854_Whiteriverfmmammaltooth1.thumb.JPG.09314bab76dd1be739461b7e1167743c.JPG

5d1588e37c335_WhiteriverfmMammaltooth2.thumb.JPG.9ab592436f76db58ce43881a57aafac1.JPG

5d1588ff18786_Whiteriverfmmammaltooth3.thumb.JPG.c0791c6d0983f14b4f31ee63625e7401.JPG

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I am no expert on individual teeth, but bfarrar might be able to help you out.  I think your educaTED GUESSES ARE PRETTY GOOD THUOGH.  Darn caps lock. 

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16 hours ago, jpc said:

I am no expert on individual teeth, but bfarrar might be able to help you out.  I think your educaTED GUESSES ARE PRETTY GOOD THUOGH.  Darn caps lock. 

Thank you

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21 hours ago, jpc said:

I am no expert on individual teeth, but bfarrar might be able to help you out.  I think your educaTED GUESSES ARE PRETTY GOOD THUOGH.  Darn caps lock. 

 

Hi JP,

 

Fossillarry is sharp on that as well.  Yeah, Bob knows that stuff too.

 

@fossillarry

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It is unfortunate that none of the specimens do not have size information .  That would have eliminated many possibilities immediately. The first two teeth could be Leptomeryx depending on size but usually this genus does not have such a tall intercolumnar tubercle(small column between protoconid and hypoconid)and does often have a structure called the "palaeomeryx fold"(a diagonal fold of enamel on the posterior side of the protoconid),lacking in the specimens.These two specimens could possible  be ,again depending on size, be protocertids. The last jaw fragment is probably an m1 or m2 from a leptocchoerid, I believe  the genus .Stibarus.  Nice specimens

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54 minutes ago, fossillarry said:

It is unfortunate that none of the specimens do not have size information .  That would have eliminated many possibilities immediately. The first two teeth could be Leptomeryx depending on size but usually this genus does not have such a tall intercolumnar tubercle(small column between protoconid and hypoconid)and does often have a structure called the "palaeomeryx fold"(a diagonal fold of enamel on the posterior side of the protoconid),lacking in the specimens.These two specimens could possible  be ,again depending on size, be protocertids. The last jaw fragment is probably an m1 or m2 from a leptocchoerid, I believe  the genus .Stibarus.  Nice specimens

Thank you for your input, but what do you mean by size information? I included their dimensions by each image. Would that be the picture of the fossil next to a ruler or other indication of measurement? And the leptochoerid ID is interesting, that's a family of artiodacyls I don't think I've ever heard of before.

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You are correct. I missed the that,sorry. Based on your measurements of the first two teeth it is likely they are Leptomeryx but there is some thing about them that makes me question this identification.  Google the genera Leptochoerus and Stibarus and can you see pictures and get literature about these small artiodactys.

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11 hours ago, fossillarry said:

You are correct. I missed the that,sorry. Based on your measurements of the first two teeth it is likely they are Leptomeryx but there is some thing about them that makes me question this identification.  Google the genera Leptochoerus and Stibarus and can you see pictures and get literature about these small artiodactys.

Thanks for your IDs!

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