Rockwood Posted January 27, 2022 Share Posted January 27, 2022 Found in gravel wash of Johnson Creek in Arlington, Texas. About a mile east of Texas 360. They feel like fossils to me. And I don't notice stink over a flame. Is the size right for a bison ? Link to comment Share on other sites More sharing options...
Lone Hunter Posted January 28, 2022 Share Posted January 28, 2022 Going by the width, dorsal groove, and lack of swelling on distal end of metasarsal my guess is bovid. 1 1 Link to comment Share on other sites More sharing options...
BobWill Posted January 28, 2022 Share Posted January 28, 2022 2 hours ago, Lone Hunter said: Going by the width, dorsal groove, and lack of swelling on distal end of metasarsal my guess is bovid. By noting the lack of swelling on the distal end I'm assuming you meant to say bos since they are both bovid I was thinking bison for the same reason. The swelling is less noticeable on the metatarsal than on a metacarpal so there may be enough present for bison. It can be a very subtle distinction. I don't know what to look for in the dorsal groove. Link to comment Share on other sites More sharing options...
Lone Hunter Posted January 28, 2022 Share Posted January 28, 2022 (edited) This quote from @Thomas.Dodson. This is Bison. The swelling of the distal condyles, the poorly developed dorsal groove along the shaft, and the curve of the anterior articular surface are all characteristic of Bison over Bos. The bone is mine, the comparison is from Harry, and yes I confused my B's but I'm thinking it's not Bison compared to mine. Edited January 28, 2022 by Lone Hunter Link to comment Share on other sites More sharing options...
Rockwood Posted January 28, 2022 Author Share Posted January 28, 2022 I think I'm going to put my posterior back in bed and think about it in the anterior part of tomorrow. Link to comment Share on other sites More sharing options...
Harry Pristis Posted January 28, 2022 Share Posted January 28, 2022 I agree that it's Bos, rather than Bison . . . The dorsal groove (4 in the illustration) is too prominent to be Bison, I think. 1 http://pristis.wix.com/the-demijohn-page What seest thou else In the dark backward and abysm of time? ---Shakespeare, The Tempest Link to comment Share on other sites More sharing options...
Thomas.Dodson Posted January 28, 2022 Share Posted January 28, 2022 30 minutes ago, Lone Hunter said: This quote from @Thomas.Dodson. This is Bison. The swelling of the distal condyles, the poorly developed dorsal groove along the shaft, and the curve of the anterior articular surface are all characteristic of Bison over Bos. The bone is mine, the comparison is from Harry, and yes I confused my B's but I'm thinking it's not Bison compared to mine. Your bone is a metacarpal where Rockwood's is a metatarsal so the width and bulkiness isn't as good an indicator. That said, I'm more inclined to say Bos for Rockwood's specimen. That's a pretty strong groove. There are a couple other ways to tell between the two on metatarsals but one is the articular surface which is rather worn. You can take measurements to see the greatest proximal width. The place of greatest width is supposed to be different between the two. The dorso-plantar depth of the medial condyle is also supposed to be measurably bigger than the lateral one in Bison. 2 Link to comment Share on other sites More sharing options...
Lone Hunter Posted January 28, 2022 Share Posted January 28, 2022 Everything inc. in my reply was from post I did last year on that bone and no one corrected me at the time that it wasn't a metatarsal. Still learning, always learning. Link to comment Share on other sites More sharing options...
Rockwood Posted January 28, 2022 Author Share Posted January 28, 2022 Aside from being the opposite leg I see a much better comparison with bison on every comparison suggested myself. Link to comment Share on other sites More sharing options...
Rockwood Posted January 28, 2022 Author Share Posted January 28, 2022 Oops. I forgot. Don't be such a sour contrarian. Thanks for the input and suggestions everyone. Link to comment Share on other sites More sharing options...
Shellseeker Posted January 28, 2022 Share Posted January 28, 2022 4 hours ago, Rockwood said: Oops. I forgot. Don't be such a sour contrarian. Thanks for the input and suggestions everyone. EASY there on those resolutions !!! I could lose kindred spirits left and right. Jack The White Queen ".... in her youth she could believe "six impossible things before breakfast" Link to comment Share on other sites More sharing options...
Rockwood Posted January 28, 2022 Author Share Posted January 28, 2022 34 minutes ago, Shellseeker said: EASY there on those resolutions !!! No worries. Everyone is still wrong. I'll just be a bit more polite when I tell them so. 1 Link to comment Share on other sites More sharing options...
dbrake40 Posted August 1, 2022 Share Posted August 1, 2022 Great info in this post. I have an almost identical metacarpal I am trying to ID. Just wanted to add this image and article here as it may provide others with helpful info. https://www.researchgate.net/publication/250613075_Sexing_Bison_Metapodials_Using_Principal_Component_Analysis 2 Link to comment Share on other sites More sharing options...
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