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Hi, This didn't come in the mystery box, but maybe I can find a way to sneak it in... It's from the Hell Creek formation, Wibaux county, Montana. I'm thinking it's a section of Triceratops/Torosaurus brow horn, what do you think?

Hi everyone! I acquired a bunch of Tyrannosaur tips from Hell Creek recently. Most were sold as Tyrannosaur indet. which is what I've been going by for them except the ones with a really thick, almost circular cross section. These three I'm kinda on the fence as they're pretty robust but not circular. All three are Hell Creek but from different localities which I have next to each one. Also when I took the cross section measurements I didn't take those at the end of the base because it was uneven on all of them, being broken tips. So what I did was I went up a little to a complete cross section that was perpendicular to the height measurement and took my cross section measurement there. So what do you all think, can these be labeled Rex? Should I continue to call them indet.? Any feedback is greatly appreciated as always!

Hi all would anybody be able to identify any of these unprepped specimens? A seller is selling them and I may be interested in purchasing depending on what they could be. They are from the Hell Creek formation.

@Troodon I suppose this is the one-decade-later version of the same tooth I posted earlier? Hell Creek formation, Garfield co, Montana CH: 12.7mm CBL: 7.2mm CBW: 3.5mm Mesial serration density: 8/mm Distal serration density: about 4/mm Thanks!

This two Edmontosaurus metatarsals are for sale from a seller I trust however they were unable to tell me which digit of the foot that these come from. Would anybody be able to actually tell the digit from the ? @Troodon

I ended up buying this piece, and probably should have posted it here before i did that.. but here are two fossils listed as Ankylosaurus skull piece and scute. Can anyone here give their opinion on it? I don't have county, but it's from the hell creek formation, south Dakota. The largest piece is 10 cm long. @Troodon

Hi, I was recently at a gem, mineral and fossil show where I purchased this fossil that was labeled "Struthiomimus Claw". Upon a closer look when I got home something just seems off. It doesnt really look too much like a claw to me. The tag says that it is from the Hell Creek of South Dakota although that is as specific as it got. Does this look like a Struthiomimus claw? If not, is there any idea as to what it may be instead? Fossil is 1 inch long and and about .75 of an inch tall.

This has the size and J-shape cross section of a dromie premax. It also has the protruding mesial carina that you can see from a distal view. What do you think? Hell creek formation, Carter co, Montana CH: 15.6mm CBL: 6.7mm CBW: 4.7mm Mesial serration density: 6.5/mm Distal serration density: 3.5/mm

Would love to hear what do you think of this one? Hell creek formation, Carter co, Montana CH: 11mm CBL: 5.8mm CBW: 2.6mm Mesial serration density: about 5.3/mm Distal serration density: about 4.3/mm Thanks!

I have this tooth that I got from Tooth Draw Quarry. It's probably nano, but just wanted to make sure. CH is 15mm CBL is 8 mm. Serration density is about 4/mm distal and maybe 5 mesial. Sorry for the blurriness. Also, the base is only pinched on one side. Thanks for any help.

Hi y'all, recently acquired this beautiful multituberculate. Total tooth height is 3 mm. Mesodma sp. P4? @jpc Cf. Mesodma sp. Hell Creek Fm., Garfield Co., MT, USA 3 mm

Hi, Looks like Rex to me. Hell creek formation, Powder River co, Montana CH: 22mm CBL: 11.1mm CBW: 6.3mm Mesial serration density: 15/5mm Distal serration density: 14/5mm

Hello, saw a few interesting things for sale. The first one is claimed to be a partial Tyrannosaurus rex skull from hell creek formation, locality is in image measures 12 cm-10.5 other 2 are both claimed to be partial limb fragments though I have doubts it can be narrowed to be from Tyrannosaurus rex. One is 2 and a half inch the other is 2 inch. I know that they say hell creek formation Wyoming which is weird. However I think some of hell creek form is in Wyoming? I would appreciate any help in verifying whether the items are identified correctly and if not what they should be described as.

Hi, What do you think? Hell creek formation, Harding Co, South Dakota CH: 13.4mm CBL: 7.3mm CBW: 3.0mm Mesial serration density: about 5.5/mm Distal serration density: about 4.4/mm

Hi, Not sure this is identifiable. Rex? Possible huge raptor indet? Hell creek formation, Garfield co, Montana CH: about 27mm CBL: 11.1mm CBW: 6.2mm Mesial serration density: about 3.4/mm Distal serration density: about 2.6/mm

Hi, What do you think? Hell creek formation, Powder River co, Montana CH: 11.2mm CBL: 5.9mm CBW: 2.9mm Mesial serration density: about 7/mm Distal serration density: about 4.3/mm Thanks!

Hi all, saw this listing for a tooth, it’s from Meade County, South Dakota and looks to me like either a Nanotyrannus or Tyrannosaurus rex tooth. Want your opinions, I personally am leaning towards Nanotyrannus due to the pinch however it seems to be pretty robust. Thanks in advance measures about 1 cm

A little slow in getting around to posting. 2 weeks ago my son and I got back from our yearly trip up north for fossil hunting. Like most years, we haul the tenement on wheels with us to save the crazy costs of hotel stays. We started out for the first 4 days in the Hell creek, digging with Walter Stein of PaleoAdventures. The first day was a little slow with lots of small tumbled bone bits and spitter teeth. Only bigger find was an unknown that I began to uncover, but didnt complete that day. The second day we changed where we were excavating and I found the first tooth of the trip. I found a great pinecone, the second ever, and 13 years since our last. A beautiful Nanotyrannus (our biggest ever by a hair). It had some acid etching and gypsum fouling, but would prep out well. 3rd day we went back to the first spot where I finished uncovered my unknown which turned into an unknown long bone next to a Thescelosaurus left ilium. The ironstone rocks it was bound in were crazy so it took me all day to finish exposing the surface. Day 4 was back at the ilium and clearing above it so I could pedestal and put on a plaster jacket. In the process of clearing, I uncovered an croc lower left jaw with a single tooth still in place. So then day 4 was spent finishing the ilium pedestal and pedestaling the jaw. The ironstone made the work slow, but I did pop out a beautiful (and huge) mammal tooth in the process! Walter said it may be the largest mammal tooth from the HC thats he's seen. We had originally planned to head over the fish quarries of Kemmerer WY, but we decided to stay and explore the Pierre shale and museums for a few days and then dig with Walter a couple more days. We went to the Belle Fourche reservoir (actually the Carlisle shale, not the Pierre) to look for ammonites and shark teeth. We did manage to find a few partials and one possibly complete ammonite, but we struck out in the search for teeth. After that we started to do some map recon of govt lands in the Pierre formation and driving back roads to find an area we wanted to try. I had little hope of being success in such a blind hunt, but we hit a motherload site I named "baculites heaven". They were everywhere. it was difficult not to walk on them in some spots. We filled 2 cardboard boxes with what we could carry and left super happy! Also found a set of deer antler sheds as a bonus. Now, last year we hunted a site on the invitation of Neil Larson. It a fairly well known site among many, and universities make trips to collect baculites there. The spot we found was every bit as good as Neils site, except we couldnt drive directly to it, and it required a bit of steep terrain hiking. The next 2 days were spent museum hopping. We visited the Mammoth dig site museum, the "world fossil find finder" museum (both in Hot Springs) and then the Black Hills Institute in Hill City. Day five in the Hell creek was back to the ilium and jaw. We started the day by jacketing and flipping the fossils, which was still a task with all the ironstone, but we finally got them out. Right after that, my son began excavating below where everyone else had worked. Basically below where all previous diggers had been sitting. Within minutes he popped out (literally it popped up!) was the best T.rex tooth (and only 3rd) we've ever recovered. A gorgeous 1.5 inch pre-max. Amazing that among all that ironstone, where people had been walking and sitting, and coming free with an ironstone rock removed, it was in perfect shape and not broken or even cracked. Our last day was lots of BOBs, chunks of turtle shell and more spitter teeth. Although not our find, I had to share this wonderful, complete Trike rib recovered. over the last couple years, more and more elements of a very large triceratops have been recovered, which is looking to be parts of a disarticulated animal. I don't have pics, but it also seems as if a disarticulated T.rex is also present. about 8 years the first femur of a rex was found while exploring, and now in the same location, more rex elements have been becoming uncovered, the last being a second femur. So, another trip is in our history book, with lots of great new fossils found. As a side note, a few years ago my son found a mammal jaw which was later sent to the Burke museum for study. This new mammal tooth uncovered is hopefully going to be part of the same collection, although Denver would probably like to have it too. A Pachy skull hornlet my son found last year, has a new home in the Melbourne museum. When I find out where any other element find a home, I'll update.

Hello I was looking at a few teeth and wanted help with identifcation First one I’m almost certain is a tyrannosaurid, even though it’s in horrible condition and am leaning towards Tyrannosaurus Rex due to robustness and no pinch. it comes from Garfield county, hell creek form and measures .6 inch. Second one is also likely a tyrannosaurid, im leaning towards Nanotyrannus but it’s probably a indeterminate tyrannosaurid. It’s from hell creek form, no locality unfortunately. Size is about 1 3/8 by 1/2 inch. 3rd one seems to be a Acheroraptor, also no locality besides hell creek form. And measures .35 inch. Last one is probably just indeterminate theropod tooth, maybe can be narrowed to tyrannosaurid? It seems to be a premax and also no locality besides hell creek, measures about .5 inch. Thanks in advance for your opinions.