johnnyvaldez7.jv Posted August 19 Share Posted August 19 I found this bone yesterday here in SE Texas on a river gravel bank. It's not mineralized, but I've found mammoth material that isn't either. The size is 2.75 inches x 2.75 inches. Height about 1.5 inches. I haven't seen anything like this and I'm wondering if it might be an ear bone of a large mammal, or maybe part of a smaller leg bone I've never seen from a knee or wrist of a large mammal. Turtle and alligator material are still odd finds for me in appearance and this is no different if it's those. Any thoughts appreciated. @Shellseeker @Boesse @CDiggs 1 Link to comment Share on other sites More sharing options...
johnnyvaldez7.jv Posted August 19 Author Share Posted August 19 Now I'm thinking it might be a patella and possibly from a cow. (Knee cap) Link to comment Share on other sites More sharing options...
Shellseeker Posted August 19 Share Posted August 19 Not an earbone. Possibly carpal or tarsal or astragalus from a Large mammal, I am thinking mammoth or eremotherium size.At an appointment. Will check for possibles when i get home 3 1 The White Queen ".... in her youth she could believe "six impossible things before breakfast" Link to comment Share on other sites More sharing options...
Shellseeker Posted August 19 Share Posted August 19 Beginning to think Rhino... Do you have Rhino in Texas? https://www.sci.news/paleontology/texas-serengeti-07099.html Here is a similar sized bone from @digit 1 The White Queen ".... in her youth she could believe "six impossible things before breakfast" Link to comment Share on other sites More sharing options...
johnnyvaldez7.jv Posted August 19 Author Share Posted August 19 @Shellseeker Yes we had them here on the Gulf Coast https://www.cambridge.org/core/journals/journal-of-paleontology/article/abs/miocene-rhinoceroses-from-the-texas-gulf-coastal-plain/31B59298131983C5FB44FF8AFCC2B273 Link to comment Share on other sites More sharing options...
Shellseeker Posted August 19 Share Posted August 19 45 minutes ago, johnnyvaldez7.jv said: @Shellseeker Yes we had them here on the Gulf Coast https://www.cambridge.org/core/journals/journal-of-paleontology/article/abs/miocene-rhinoceroses-from-the-texas-gulf-coastal-plain/31B59298131983C5FB44FF8AFCC2B273 Seems like the east coast of Texas and the west coast of Florida share Miocene Rhino species.. To me, those flat surfaces top and bottom screams foot bone like carpals, and the sizes seem compatable with a mammal like rhino... Ken may be able to help since he has handled a lot of Rhino bones at Montbrook.. A Navicular is similar but many differences... 1 1 The White Queen ".... in her youth she could believe "six impossible things before breakfast" Link to comment Share on other sites More sharing options...
garyc Posted August 20 Share Posted August 20 Maybe a sloth carpal? 1 Link to comment Share on other sites More sharing options...
Shellseeker Posted August 20 Share Posted August 20 13 minutes ago, garyc said: Maybe a sloth carpal? Certainly that the other possibility... similar size carpals... but which carpal .. The White Queen ".... in her youth she could believe "six impossible things before breakfast" Link to comment Share on other sites More sharing options...
CDiggs Posted August 22 Share Posted August 22 On 8/19/2024 at 8:34 AM, johnnyvaldez7.jv said: I've been obsessing over this one for a while, especially because wrist/carpal, ankle/tarsal bones are so tough and I was in total agreement with the other comments. I've gradually argued myself around to your second idea though Johnny, I agree this is a patella. I can't say to what, I know that some patella can be identified but I'm rubbish with them, I could be convinced of anything from cow to ground sloth at this point but I do think you've got the element correct. 1 Link to comment Share on other sites More sharing options...
Shellseeker Posted August 24 Share Posted August 24 A photo from this thread.. I see some similarities: https://www.thefossilforum.com/topic/73769-patella/ 1 The White Queen ".... in her youth she could believe "six impossible things before breakfast" Link to comment Share on other sites More sharing options...
johnnyvaldez7.jv Posted August 25 Author Share Posted August 25 @CDiggs @Shellseeker I was looking for sloth vertebra and came across this patella for Megalonyx. I think I see similarities... especially the side view. 2 1 Link to comment Share on other sites More sharing options...
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