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I purchased a lot of unprepared fossils on online auction site a few years back that were sold as collected on private lands in the Hell Creek formation. These are 3 of the most interesting ones to me, I used a quarter for scale, one a possible jaw, one a possible tooth, the 3rd maybe another possible tooth? Any help or info is appreciated, thank you .

Another piece from the collection at work: Description given is Hadrosaur Tibia. It was in the collection before I started here. It is in 2 distinct pieces, and it has been that way the entire time, since the foam cutouts in its box are shaped for them. It has broken in other places, but I've fixed those with paleobond (although I do have pictures of the broken cross sections somewhere) I'm mostly looking to confirm or disprove whether or not it's existing ID is plausible, and maybe identifying which side (right/left) it's from. Pictures: https://drive.google.com/folderview?id=17X4lkoWQODdUw1G4k12LclGVWYnwcAik

So, this is my first post here, and I have what I imagine might be an unusual case for this forum. I work for a travelling dinosaur exhibit, setting up a display of real fossils. Within the last year, our owners purchased a number of dinosaur fossils from a dealer (ie, an acquaintance of theirs) and shipped them to our CEO's home, who later sent them to our company's repair shop to have travel cases built, before shipping them to our show on the road. Somewhere in all of that, some of the fossils' original information was lost. I reached out to our executives who promised to look into it and get back to me, but naturally, they would forget, I would remind them, they would never get back to me, and I spent multiple months in that cycle. So, here's everything I know: I originally assumed it was a Triceratops scapula, because it had been offhandedly mentioned to me that was one of the purchases. However, I learned that the scapula was sent to our second show, and after comparing it to images of skeletons, I ruled that out. I changed my guess to Triceratops Ulna. A very well known paleontologist (whose name I won't reveal here) visited our show as part of a media promotion this summer, and when asked, took a look. He initially didn't disagree with my assessment, but a few days later emailed me, saying that after additional analysis of the pictures he took, he had changed his mind to Triceratops tibia, and later, after consulting a colleague who specializes in Ceratopsians, he asserted it was a Triceratops Fibula. Some time later, I finally talked to someone in accounting, who was able to get me the various invoices, which was somehow less helpful than you'd think it would be. But it did let me get in touch with our dealer, who is notoriously secretive and doesn't share much in terms of sourcing. She did reply to me, however, telling me it is an... Edmontosaurus humerus. Or at least that was the highlighted bone in the diagram she sent me, which is the closest piece of "official" documentation that I've seen since it was purchased. However, this looks different to the same bone on mounted skeletons of Edmontosaurus as well, at least to my eyes. tl;dr: I no longer trust anybody. Multiple conflicting identifications, I don't know where it came from, other than a mention in the dealer's email that it's from the Hell Creek formation. Company is restructuring, so getting responses from anyone is a miracle. I can upload better pictures of the fossil later if necessary. I no longer put this piece on display because I simply don't know what to call it. Help.