diginupbones Posted June 19, 2019 Share Posted June 19, 2019 These big teeth are always a mystery to me. I don’t know how to tell the difference between bison camel and horse. Thanks for looking Link to comment Share on other sites More sharing options...
Manticocerasman Posted June 19, 2019 Share Posted June 19, 2019 horse in my opinion. http://eprints.whiterose.ac.uk/120354/1/Barron_Ortiz_et_al._2017.pdf growing old is mandatory but growing up is optional. Link to comment Share on other sites More sharing options...
caldigger Posted June 19, 2019 Share Posted June 19, 2019 Agreed, equine Link to comment Share on other sites More sharing options...
diginupbones Posted June 19, 2019 Author Share Posted June 19, 2019 Nice! Thanks for the quick replies. Sorry if this is a stupid question but is there anyway to tell the age of these? I know horses have been around for millions of years but I didn’t know if there was a way to narrow it down. Thanks Link to comment Share on other sites More sharing options...
ynot Posted June 19, 2019 Share Posted June 19, 2019 Look for the formation information of the location it was found. Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
fossillarry Posted June 28, 2019 Share Posted June 28, 2019 Very interesting specimen. It's a horse upper jaw fragment. Genus is likely Pliohippus (short crowns,very curved tooth ,round protocone joined to the protoloph in early where.) More info possible if you had locality source. 2 Link to comment Share on other sites More sharing options...
diginupbones Posted June 28, 2019 Author Share Posted June 28, 2019 This was found in the Sand Hills region of Nebraska. The fossils you find in that area are buried under many many feet of sand so you’re kind of at the mercy of rivers, washouts or what they called blowouts. Link to comment Share on other sites More sharing options...
fossillarry Posted June 30, 2019 Share Posted June 30, 2019 I regret to say, while I've heard of the Sand Hills and I am almost certain that I have driven in the area I don't quite remember where they are. I can't find the area on my map either,sorry. Would you please provide a city or in which county the Sand Hills are near.Thanks Link to comment Share on other sites More sharing options...
Randyw Posted June 30, 2019 Share Posted June 30, 2019 Link to comment Share on other sites More sharing options...
fossillarry Posted June 30, 2019 Share Posted June 30, 2019 The fossils from the Sand Hills area rang in age from Oligocene to Pliocene so still a very wide range of possibilities. If my id of the teeth is correct they are most likely Clarendonian (middle Miocene) in age. More specific locality data might provide the name of the formation the teeth are from. Link to comment Share on other sites More sharing options...
diginupbones Posted June 30, 2019 Author Share Posted June 30, 2019 I cleaned them up a little bit and took a better photo. They are from the valentine area near the Niobrara River. Thanks for your info! Link to comment Share on other sites More sharing options...
fossillarry Posted July 1, 2019 Share Posted July 1, 2019 Boy that is a lot better. I am much more confident in my identification now. In the first tooth on the left, an M1,had the protocone attached to the hypocone (the protocone is actually broken off) and is one of the diagnostic feature of the genus Pliohippus. The little loop under the prefossette and postfossette indicates that the post protoconal valley was closed when the tip of the protocone joined the hypocone usually only found in Pliohippus in the equini tribe of horses but it is also found in Pseudhipparion, tribe hipparini. Protohippus which is about the same size as Pliohippus and found in this area dose not have the connected protocone. The fossil jaw could be from the Burge member of the Vanetine formation and is common in this area during the early Clarendonian. I hope this helps you some 4 Link to comment Share on other sites More sharing options...
diginupbones Posted July 1, 2019 Author Share Posted July 1, 2019 That is very helpful! Thank you for taking the time to look at this, I really appreciate it Link to comment Share on other sites More sharing options...
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