PaleoNoel Posted July 31, 2021 Share Posted July 31, 2021 Hi everyone! I wanted to post one of my new favorite finds from this past week of collecting in the Hell Creek formation of Montana. I found this little partial claw at a microsite which proved to be quite productive, making for a great day. While the articulating surface is missing, I still feel that it could be identifiable and my first guess is bird. Avisaurus in particular as I remember seeing similar claws being labeled as such on other platforms. It’s about two centimeters long and the bottom is flat, giving it a somewhat triangular cross section. photos from the field. Pics I just took from the motel. Unguals from the paper describing Mirarce, a close relative of what’s present in Hell Creek. I’d love to read some opinions. 1 2 Link to comment Share on other sites More sharing options...
ThePhysicist Posted July 31, 2021 Share Posted July 31, 2021 Cool claw! I agree it looks similar to the claws in the figure you posted, but I'm not informed enough to pass any judgement. @Troodon@Auspex "Argumentation cannot suffice for the discovery of new work, since the subtlety of Nature is greater many times than the subtlety of argument." - Carl Sagan "I was born not knowing and have had only a little time to change that here and there." - Richard Feynman Collections: Hell Creek Microsite | Hell Creek/Lance | Dinosaurs | Sharks | Squamates | Post Oak Creek | North Sulphur River | Lee Creek | Aguja | Permian | Devonian | Triassic | Harding Sandstone Instagram: @thephysicist_tff Link to comment Share on other sites More sharing options...
Phos_01 Posted July 31, 2021 Share Posted July 31, 2021 Wow thats awesome to find! It must feel great. Did you go hunting on a tourist Tour? or did you rent property? Im looking to visit the States also in the future. Link to comment Share on other sites More sharing options...
Auspex Posted July 31, 2021 Share Posted July 31, 2021 It may be very difficult to firmly label it as Avian, but it does tick some of the boxes. It is a great find, no matter what, and I am envious. I have to wonder whether it is native to the deposit in which you found it, because of the coloration. Is that microsite a reworked deposit, or is it assumed to be previously undisturbed? "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
Troodon Posted July 31, 2021 Share Posted July 31, 2021 Nice find,. There are some similarities with your claw to those in the illustration especially with its flat sides by the blood groove. What strikes me that might be different is the ventral surface. Yours looks very flat and those in the photo look curved but its hard to say. I have a few in my collection from the HC that match DI and need to look at them. Im away from home so will be a while. I will also say that the preservation, color, for a surface find in the HC is not uncommon. Unfortunately without the articulation I think its going to be difficult to make a positive call. Link to comment Share on other sites More sharing options...
PaleoNoel Posted July 31, 2021 Author Share Posted July 31, 2021 1 hour ago, Troodon said: Nice find,. There are some similarities with your claw to those in the illustration especially with its flat sides by the blood groove. What strikes me that might be different is the ventral surface. Yours looks very flat and those in the photo look curved but its hard to say. I have a few in my collection from the HC that match DI and need to look at them. Im away from home so will be a while. I will also say that the preservation, color, for a surface find in the HC is not uncommon. Unfortunately without the articulation I think its going to be difficult to make a positive call. Thanks Troodon, I was super happy to find it. Do you think it’s safe to say it’s paravian (bird, dromaeosaur & troodontid) 2 hours ago, Auspex said: It may be very difficult to firmly label it as Avian, but it does tick some of the boxes. It is a great find, no matter what, and I am envious. I have to wonder whether it is native to the deposit in which you found it, because of the coloration. Is that microsite a reworked deposit, or is it assumed to be previously undisturbed? Thanks for your input! The light coloration is consistent with other fossils I’ve found in the formation, usually comes as a result of sun bleaching. I found it amongst iron siderite at a microsite deposit. 14 hours ago, ThePhysicist said: Cool claw! I agree it looks similar to the claws in the figure you posted, but I'm not informed enough to pass any judgement. @Troodon@Auspex Thanks! 11 hours ago, Phos_01 said: Wow thats awesome to find! It must feel great. Did you go hunting on a tourist Tour? or did you rent property? Im looking to visit the States also in the future. I went with PaleoProspectors, check my gallery and trip reports and you’ll see some of my other finds with them. Link to comment Share on other sites More sharing options...
Troodon Posted July 31, 2021 Share Posted July 31, 2021 1 hour ago, PaleoNoel said: Thanks Troodon, I was super happy to find it. Do you think it’s safe to say it’s paravian (bird, dromaeosaur & troodontid) Like I said would like to see my claws to compare against. Its definitely not a troodontid and with that flat ventral side probably not Dromaeosaurid. 1 Link to comment Share on other sites More sharing options...
PaleoNoel Posted August 4, 2021 Author Share Posted August 4, 2021 @hxmendoza I'm interested in your opinion on this. Link to comment Share on other sites More sharing options...
PaleoNoel Posted October 11, 2021 Author Share Posted October 11, 2021 Ok so a good deal of time has elapsed since posting this ID and I finally looked over Troodon's Jurassic Park thread on his small bird, theropod & pterosaur material. The best comparison to my claw is this, with a similarly flat ventral side and overall curvature. Link to comment Share on other sites More sharing options...
PaleoNoel Posted March 14, 2022 Author Share Posted March 14, 2022 @Troodon @hxmendoza circling back to this thread, any thoughts? Compares well with the claw above. Link to comment Share on other sites More sharing options...
Troodon Posted March 14, 2022 Share Posted March 14, 2022 Its pretty hard to ID but I still would lean more towards the claws you showed of Mirarce than the one in my collection. That claw has two large ventral formaen followed by some rugosity development which I do not see any evidence in your claw. The size also matches others in my collection that are similar to Mirarce 2 Link to comment Share on other sites More sharing options...
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