After many hours of scrubbing, picking and preparation this is the result. A right humerus from what I believe is a Uintathere. Location of find is “Bridger C” based on GPS coordinates cross referenced to Osborn and Wyoming Geologic Survey “Horse Ranch” Quadrangle. Length of Humerus as presented is 36cm. The distance from the Distal end to the Deltoid Tuberosity is approximately 27.5cm. By using the data shown it is possible that the remaining missing portion could be anywhere from an additional 1/4 to 1/2 of this distance. This gives a range of between 45cm to 54cm in total length.
I originally thought this was a bone from a Titanothere, however after some discussions with some folks on a fossil forum I was pointed towards the Uintathere. These were huge creatures with 6 horns.
I will post some more pictures in the future. Enjoy
This article was written by one3xi