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BenWorrell

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Hello,

 

I'm a new member to the Fossil Forum, could someone please help me ID these teeth?

 

I found the larger, blacker tooth this morning on a sandbar of a creek in Linn County, Iowa.  My wife found the smaller tooth on the same little sandbar about a year ago. I have found several bison teeth in the many other locations I have walked up and down this river, but these two have been stumping me. These are the only teeth we have found so far that still have roots intact which leads me to believe that they did not travel very far in the creek. These may or may not be from the same animal, but two strange teeth from the same spot makes me wonder if that could be the case. The smaller one has a stylid, but even the small one is thicker than the bison teeth that I have. Two photos compare size to a modern bison jaw. 

 

Small tooth:

Width: 26mm

Thickness at top: 16mm

Enamel height: 32mm

 

Large tooth:

Width:29mm

Thickness at top: 27mm

Enamel height: 14mm

 

20180505_164836.thumb.jpg.5cd7219d5b69a1e2f8385d0fa8068722.jpg20180505_164853.thumb.jpg.992e710b24e272dfcbbbf060c87e7a90.jpg20180505_165005.thumb.jpg.69994b4886e0e6fd13b3953d06cad146.jpg20180505_165020.thumb.jpg.eb9a38793f312d26aa6d9ab6a8d66576.jpg

 

 

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I think that you've found a couple of upper bison/cow teeth, one senile with some distinctive features worn away.

 

 

bison_P2_M3_opposite.JPG

  • I found this Informative 5

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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@Harry Pristis Here is a photo of the larger tooth against a modern bison upper that has most comparable shape. The bison teeth I have are much smaller, is it possible it is a large ancient bison that was bigger than modern bison? Is it possible it is something else entirely?

 

Thanks for the input!

 

20180506_152244.thumb.jpg.51b0ffcb8bdaa547d25c9710eac25be4.jpg

 

 

  • I found this Informative 2
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Well, it's a bovid for sure.  I suspect your comparison tooth row is from a juvenile bovid with deciduous teeth.  Extant Bison occidentalis is smaller than its ancestors.  Identify your tooth position from the image I posted.  Here are some measurements to compare:

 

 

bison_teeth_table.jpg

  • I found this Informative 2

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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  • 3 weeks later...
1 hour ago, BenWorrell said:

@Harry Pristis Thanks for posting this table! What reference did this come from? 

 

 

 

The table of measurements is from PLEISTOCENE MAMMALS OF FLORIDA, S. David Webb, Ed. (1974).

 

 

  • I found this Informative 1

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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On ‎5‎/‎6‎/‎2018 at 4:42 PM, BenWorrell said:

@Harry Pristis Here is a photo of the larger tooth against a modern bison upper that has most comparable shape. The bison teeth I have are much smaller, is it possible it is a large ancient bison that was bigger than modern bison? Is it possible it is something else entirely?

 

Thanks for the input!

 

20180506_152244.thumb.jpg.51b0ffcb8bdaa547d25c9710eac25be4.jpg

 

 

I have this giant that has been IDed as bison, it is a biggun! 

P1010102.JPG

PB030011.JPG

  • I found this Informative 1
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