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Need help with a Mammal bone ID


diginupbones

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Not only do I not know which critter this came from but I also I don’t know which bone it is. Getting a proboscidean or rhino feel.  Any help appreciated. Most likely Miocene, found in North Central Nebraska. 
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15 cm Calcaneum,  you might check this thread...

On your bone,  I the spire I usually see very pronounced on Bison seems shortened in the 1st photo,   but you should eliminate Bison or not as a candidate....

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The White Queen  ".... in her youth she could believe "six impossible things before breakfast"

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I have a pretty good collection of calcanei but these two were so different from the rest of my collection that I didn’t realize that’s probably what they are. The one side of them is so narrow that I don’t think that they are cow, bison, or camel. Hopefully this picture captures what I’m talking about a little better.  The base of these is also very different than the rest of them that I have seen. @Harry PristisFE14BD82-3915-48AE-AB48-9B4FB8868F53.thumb.jpeg.79e67a3feead325f18f78e3333f9b694.jpeg

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I don't think your finds are rhino or proboscidean.  If you can eliminate cow and bison, there are other, less common, possibilities in the Miocene.  Those might require a visit to the local museum.

 

 

rhino_menoceras_calc_A.JPG

rhino_menoceras_calc_B.JPG

rhino_menoceras_calc_C.JPG

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http://pristis.wix.com/the-demijohn-page

 

What seest thou else

In the dark backward and abysm of time?

---Shakespeare, The Tempest

 

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55 minutes ago, garyc said:

Any chance the smaller bone is a vertebral process?

no... both bones have articular surfaces on both ends.  

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16 hours ago, Harry Pristis said:

Here's another, larger rhino:


Thanks Harry, Teleoceras was pretty common in my neck of the woods. Do you think this one is a good match? It measures 117mm but it  is pretty worn. 

59C1AB9C-9B97-4E22-81AD-A957DB563134.thumb.jpeg.d008c750bec1329d154a0a78e3a4ce43.jpeg

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I think you should send me your collection  so I can identify mine easier!:BigSmile:  Your  photos help a lot. Thanks!

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  • 2 weeks later...

Both are Artiodactyl calcaniea, missing the distal articular ends.  Both are from camels.

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1 hour ago, fossillarry said:

Both are Artiodactyl calcaniea, missing the distal articular ends.  Both are from camels.


Great! Many  thanks!

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4 hours ago, fossillarry said:

Both are Artiodactyl calcaniea, missing the distal articular ends.  Both are from camels.

@diginupbones

There is a bet to be had here.. You have 2 Camelid calcanea from South Dakota... what are they?  Camelops hesternus (15 cm) and Hemiauchenia macrocephala (12 cm). 

Seems like there would be a limited number of choices,  but maybe not....

The White Queen  ".... in her youth she could believe "six impossible things before breakfast"

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They could be Aepycamelus and Procamelus ( which are large,but not gigantic, and medium genera. But without better locality data can't be  more specific.

 

 

 

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