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  1. PaleoNoel

    Bird Vertebra from Hell Creek

    Hi everyone, I wanted to share my favorite find from the Hell Creek of eastern Montana from the last few weeks. It's overall shape and size suggest to me that it's a hesperornithid vert. The bone is a bit over 3 cm long and around 2.5 cm in height. After some comparisons to Hesperornis vertebrae online I feel that this is the best match. From "Identification of a New Hesperornithiform from the Niobrara Chalk and Implications for the Ecologic Diversity of Early Diving Birds" by Alyssa Bell and Luis Chiappe in 2015 https://journals.
  2. Dino Dad 81

    Theropod tooth Hell Creek

    I got another odd man out in my hell creek group. What do you think? The hell creek formation CH: 11mm CBL: 6mm CBW: 3mm Mesial serration density: about 5.5/mm Distal serration density: about 4/mm Serration shape: Hard to tell, given that it looks like half of each denticle is worn away Base cross-section: Almond Mesial carina: Straight Thanks in advance!
  3. Georgemckenzie

    Tyrannosaurus rex tooth help Id

    Hiya everyone interested in a tooth seller says it’s trex but a help with id would be great thanks
  4. MaureenS

    Is this a triceratops bone?

    Hi everyone! I'm new here and am hoping to find out if the item I have is indeed a triceratops bone from the Hell Creek formation (as it was labeled). When I look at photos of fossilized bones, I see the bone's "spongy" look and all the photos I've looked at to compare do NOT look like this item. Therefore, it seems to perhaps not be a bone, but it does seem to be something fossilized. I apologize for the less-than-crisp focus abilities of my phone camera, but as you hopefully can see there is what looks to me like skin or scale patterns and a lack of spongy-ness. If anyone has insi
  5. FB003

    Acheroraptor? Something else?

    Hi all, Trying to place an ID on it. Seller had it listed as "dromaeosaur". I wanted the near perfect troodon tooth that came with it so didn't matter what this was. Looks like a tiny little acheroraptor to me but I could be wrong. Still learning. Tough to get closer on the serrations even with a macro lens but if needed just let me know. Thoughts? Thanks, Frank From Hell Creek - Carter County, MT Measurements below in mm.
  6. My youngest brother found this on his first microsite hunt. I could not believe it. I have not found many mammal teeth and am unsure as to what this belonged to. I also added some pictures of another tooth found in the area that I am having a hard time placing an ID on. Any help is appreciated! Hell Creek formation, Dawson County, MT.
  7. Hello all, looking to get some opinions. 5-6 years ago I came across a ton of fragmented bones while scouting out a new collecting site. One of the first things that really caught my eye was this, lets call it a "claw". Like I said this was among a ton of shattered bone so it kind of stood out right away. I followed the bone fragments more up a very steep hill that turns into a cliff. This led me probably 50-75 feet from the initial sighting of bone to a place that was dangerously steep, but I could see more bone weathering out of the hill. It was in very bad shape
  8. FF7_Yuffie

    Hell Creek Arm Bone

    Found: Baker County, Montana 9.5 cm Label says Tyrannosaurus but with a question mark. So, is it Tyrannosaur, or even Theropod? So many of these bone pieces labelled tyrannosaur actually turn out to be Edmontosaurus. I am guessing narrowing it down to T-Rex would be very unlikely and difficult? Thanks for the help.
  9. ThePhysicist

    Juvenile T. rex tooth

    From the album: Hell Creek / Lance Formations

    A young T. rex tooth. The preservation of the enamel is fantastic, and I like the dark hues. The serrations are also in great shape. There is some minor feeding wear on the tip.
  10. ThePhysicist

    Juvenile Tyrannosaur tooth

    From the album: Hell Creek / Lance Formations

    Sold by the BHI as Nanotyrannus lancensis. However, given the uncertain status of Nanotyrannus' validity, I chose to label it as Tyrannosaurid for now. It is interesting to compare to my other small Tyrannosaur teeth of the same/similar position. The base is clearly more compressed than my baby rex tooth (which is also smaller).
  11. ThePhysicist

    Juvenile Tyrannosaur tooth

    From the album: Hell Creek / Lance Formations

    A Tyrannosaur tooth from Eastern Montana. Given the basal "pinching," this would be Nanotyrannus lancensis if it's valid (otherwise it's T. rex). Interesting to compare it to my other small Tyrannosaur teeth. The tip was probably broken after fossilization, but the gouges on the labial face may be inflicted while the tooth was in use. Note that the enamel is well-preserved with sharply resolved texture and is still clear.
  12. ThePhysicist

    Juvenile Triceratops tooth

    From the album: Hell Creek / Lance Formations

    Sold as Triceratops sp. by the BHI. Normally, Ceratopsid teeth should be considered indeterminate since the teeth of the large-bodied Ceratopsids present in the Hell Creek fauna are virtually indistinguishable. Trusting the ID of the BHI would be to label it as Triceratops sp., but to be conservative (and since I don't know their reasoning behind the ID), I chose to label it as Ceratopsidae cf. Triceratops sp.
  13. ThePhysicist

    Edmontosaurus tooth (maxillary)

    From the album: Hell Creek / Lance Formations

    Unworn Hadrosaur tooth from the maxillary (upper jaw). Based on the size, it could be from a juvenile.
  14. Dino Dad 81

    A visit from the ghost of hell creek?

    Hi, What do you think? From the hell creek formation, Harding Co, South Dakota CH: 12.7mm is showing, but with the significant tip wear facet, I estimate at least 14mm CBL: 7.5mm CBW: 3.3mm Mesial serration density: about 7/mm !! Distal serration density: about 4.5/mm Serration shape: raptor (I think) Base cross-section: Oval Mesial carina: Straight Sorry, I'm stuck with caliper pics at the moment, but might
  15. FF7_Yuffie

    A minute Hell Creek theropod tooth?

    This tooth is from Harding County, Hell Creek formation. Now--it is tiny. 1mm long, so is the smallest tooth I own by far, but it has quite clear serrtations that can be photographed. It came with a few others and this one stands out because of its fatness and squatness (most of the others are long, relatively speaking) I am wondering if possibly, maybe, hopefully .... I may have a baby/infant Rex? Now, unfortunately, the base is a bit thin--but could that be because of the size of the tooth? It's quite an unusual one and hope it can be ID'd
  16. Warbreaker

    Possible triceratops nose horn

    Found this piece associated with weathering bone chunks embedded in sandstone. My first thought was nose horn but the horn portion looks like it might be a sandstone cast of the inside of the horn. Location Glendive montana, hell creek. What do you guys think?
  17. Hi I have a somewhat weird question you can probably help me with: I was currently discussing with some other fossil enthusiasts about how rare dinosaur fossils really are. Obviously, there are areas where no dinosaurs are found and then there are places where dinosaur fossils have been piled up and preserved in large numbers. My friends claim was that dino fossils are not rare at all but are very labourous to collect (and therefore rare). -> I am trying to get an idea about the number of dinosaur fossils per area or even better per volume. For examp
  18. Here is my new wood grain Tyrannosaurus rex tooth. Found in Hell Creek, South Dakota and just shy over 1'40 inches. I really like the split with the serrations. Makes it extra special for me.
  19. Found this little guy in the surface float near Glendive, Mt, hell creek formation. I thought it might be a theropod phalange, but a buddy thinks it's champsosaurus. Any thoughts?
  20. ThePhysicist

    Juvenile Tyrannosaur tooth

    From the album: Hell Creek / Lance Formations

    Tyrannosauridae (Cf. Tyrannosaurus rex) Hell Creek Fm., Wibaux Co., MT, USA This minute tooth is indeed Tyrannosaur: the mc/dc serration densities are virtually identical, and the denticle shape is not like those of Dromaeosaurids. It also has a slight pathology near the tip.
  21. Dino Dad 81

    Metatarsal hell creek

    Hey all, Thanks for taking a look here. Does this look dromaeosaurid to you? It's from the hell creek, it's 13" long and a about 1.5" wide and deep. Thanks for your time.
  22. Dino Dad 81

    Small hell creek vertebra

    Any thoughts on this centrum from the hell creek in South Dakota? Thanks in advance.
  23. Dino Dad 81

    Rex? DR? (nano?)

    Hi, This one is a real kicker for me and I'm eager to hear what you think. Before studying it, I thought it might be a small T Rex, but the serrations are too fine. I don't believe it can be Nano for a few reasons, base shape being a big one (zero pinch). But it'd be unusual for a DR I think too, mostly for the mesial carina, but not sure. I wonder if much of the oddity is due to it possibly being an anterior tooth...? It's: From the hell creek formation CH: 16.6mm CBL: 8.8mm (1.88 ratio) Mesial serration de
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