AranHao Posted January 19 Share Posted January 19 Hello,everyone. May I know what dinosaur species this claw belongs to? Ornithomimus or Dromaeosaurid? It comes from the HellCreek Formation. Thank you! Link to comment Share on other sites More sharing options...
Nanotyrannus35 Posted January 19 Share Posted January 19 It looks similar to a dromaeosaurid foot claw shown in Troodon's Hell Creek Claw Guide Quote Dromaeosaurid Foot Claws - I've seen these much longer than 4" not sure if they are Acheroraptor Digit II ( Killing Claw ) is different from Digit III & IV (2 1/2" Length) I do not know what Digit III and IV look like here is a claw that might fit that bill. 1 1/8" Long Enthusiastic Fossil Hunter Link to comment Share on other sites More sharing options...
jpc Posted January 19 Share Posted January 19 Not sure how you see any similarity to a dromaeosaur claw. This is a either a Thescelosaurus or Pachycephalosaur claw 1 3 Link to comment Share on other sites More sharing options...
Brevicollis Posted January 19 Share Posted January 19 I would say this is a Ornithomid claw. Pachycephalosaurus has a different claw shape , its more rounded . This claw is long, narrow, and pointed . So it matches with Ornithomimus . 1 I like fossils... Thats all I have to say. Link to comment Share on other sites More sharing options...
Daze Posted January 19 Share Posted January 19 I also lean more towards Ornithomimus foot claw. Link to comment Share on other sites More sharing options...
jpc Posted January 19 Share Posted January 19 I just looked at our Struthiomimus skeleton. Its toes are more triangular in cross section. This seems more D shaped in cross section than the ones I just looked at. 3 Link to comment Share on other sites More sharing options...
AranHao Posted January 20 Author Share Posted January 20 Thank you for your inputs. At first time, I would lean towards Ornithomimus, but I noticed that Ornithomimus claws had grooves near the articulation,and my claw did not. 1 1 Link to comment Share on other sites More sharing options...
AranHao Posted January 20 Author Share Posted January 20 5 hours ago, Nanotyrannus35 said: It looks similar to a dromaeosaurid foot claw shown in Troodon's Hell Creek Claw Guide I personally think it looks like dromaeosaurid, so I would like to hear everyone's opinions. Link to comment Share on other sites More sharing options...
musicnfossils Posted January 20 Share Posted January 20 Ornithomimid. I see zero resemblance to a dromaeosaur claw. 1 1 Link to comment Share on other sites More sharing options...
AranHao Posted January 20 Author Share Posted January 20 6 hours ago, jpc said: Not sure how you see any similarity to a dromaeosaur claw. This is a either a Thescelosaurus or Pachycephalosaur claw It doesn't look like…… Link to comment Share on other sites More sharing options...
jpc Posted January 20 Share Posted January 20 3 hours ago, musicnfossils said: Ornithomimid. I see zero resemblance to a dromaeosaur claw. I agree about the dromaeosaur.. zero resemblance. But I still think it is more like a Thesc or Pachy Link to comment Share on other sites More sharing options...
musicnfossils Posted January 20 Share Posted January 20 4 hours ago, jpc said: I agree about the dromaeosaur.. zero resemblance. But I still think it is more like a Thesc or Pachy I’ve found so many ornitho claws everything about this screams ornitho, I’ll post photos later of many to compare this with 1 Link to comment Share on other sites More sharing options...
musicnfossils Posted January 20 Share Posted January 20 Here’s some of my ornitho toe claws. Yours has a longer & thinner appearance than thesc or pachy and has that signature dimple at the bottom that the ornitho claws have. 1 1 1 1 Link to comment Share on other sites More sharing options...
jpc Posted January 21 Share Posted January 21 I agree that yours are ornithomimid claws, but I think the OP's claw is slightly wider and certainly flatter. 1 Link to comment Share on other sites More sharing options...
AranHao Posted January 22 Author Share Posted January 22 On 1/20/2024 at 4:14 AM, jpc said: This is a either a Thescelosaurus or Pachycephalosaur claw You're right, Pete Larson said the same thing. Link to comment Share on other sites More sharing options...
AranHao Posted January 22 Author Share Posted January 22 15 hours ago, jpc said: I agree that yours are ornithomimid claws, but I think the OP's claw is slightly wider and certainly flatter. but I don't know why, my cross-section is very similar to AA... I'm sorry, could you explain how you ID it? Link to comment Share on other sites More sharing options...
jpc Posted January 22 Share Posted January 22 (edited) AA shows the articular face, not the cross section. Here are a few photos of the Struthiomimus skeleton in the Tate Geological Museum. This is a cast of a specimen Pete and his crews collected a few decades ago. The foot here is laying on top of the hand. Let's look a little closer at the claw facing left here. I am using this one as an example because the light is best on this one. The light blue line I have drawn below is an indentation, which yours does not have. Because there is a hollow valley there, the dark blue line is a very distinct ridge, not a subtle round surface like yours. I hope this helps. Yours is pretty small... maybe it is from a young individual. Edited January 22 by jpc 1 Link to comment Share on other sites More sharing options...
AranHao Posted January 23 Author Share Posted January 23 10 hours ago, jpc said: AA shows the articular face, not the cross section. Here are a few photos of the Struthiomimus skeleton in the Tate Geological Museum. This is a cast of a specimen Pete and his crews collected a few decades ago. The foot here is laying on top of the hand. Let's look a little closer at the claw facing left here. I am using this one as an example because the light is best on this one. The light blue line I have drawn below is an indentation, which yours does not have. Because there is a hollow valley there, the dark blue line is a very distinct ridge, not a subtle round surface like yours. I hope this helps. Yours is pretty small... maybe it is from a young individual. This has indeed been helpful to me, and I am very grateful for it. 2 Link to comment Share on other sites More sharing options...
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