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Showing results for tags 'hell creek'.
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Identification Tyrannosaur teeth characteristically have similar serration densities on each carina, with chisel-shaped denticles. Though small, this tooth matches those qualities, and doesn't resemble other smaller theropods like Dromaeosaurids. Identified as Cf. T. rex based on its similarity to another, larger tooth in my collection. Notes This tooth is from a juvenile individual. Serration densities illustrated in the above photos. There is a slight pathology (bend) near the tip.
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From the album: Hell Creek / Lance Formations
Tyrannosauridae (Nanotyrannus-morph) Hell Creek Fm., Powder River Co., MT, USA A classic Nanotyrannus Tyrannosaur tooth: compressed and blade-like. Exceptional preservation, with a minor wear facet near the tip on the lingual side (indicating it's from the left maxilla). I really like the color.-
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From the album: Hell Creek / Lance Formations
Tyrannosaurus rex Hell Creek Fm., Fallon Co., MT, USA The CHR suggests a posterior position for this somewhat beat-up T. rex tooth.-
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Identification Tyrannosaur teeth have similarly-sized serrations on each edge, and the serrations are chisel-shaped. This is a classic "Nano-morph" tooth being compressed and blade-like (which is the primitive condition of Tyrannosaurs). Notes This tooth has excellent preservation, with serrations crossing the tip, and clear enamel. There is a minor wear facet near the tip on the lingual side, indicating this is from the left maxilla.
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From the album: Hell Creek / Lance Formations
Dromaeosauridae (Cf. Acheroraptor temertyorum) Hell Creek Fm., Carter Co., MT, USA Acheroraptor's dentition is known incompletely, so it's possible this tooth is from Acheroraptor. Until more material is described, this tooth will remain indeterminate. There may be slight facets, but I'm not confident that's what I'm seeing.-
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From the album: Hell Creek / Lance Formations
Acheroraptor temertyorum Hell Creek Fm., Garfield Co., MT, USA A Velociraptorine tooth with the diagnostic longitudinal ridges Acheroraptor is known for. This tooth has some wear on the tip and root etching at the base. Art by Emily Willoughby-
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Identification A. temertyorum is characterized by the typical Dromaeosaurid traits (compressed, recurved, differing mc/dc serration densities), and longitudinal ridges/facets on the crown face. Notes This tooth was found this past Summer ('21), and in the same county as the holotype specimen.
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Happy Christmas eve, Merry Christmas, Happy Holidays and a prosperous new year! It may be Christmas eve, but its also Friday, which means its a Fossil Friday. I missed las week due to being sick. Today's video offering is from the first day of a long, multi-day fossil exploration trip in South Dakota.
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Anyone familiar enough with the Crocodylomorphs from the Hell Creek Formation to be able to help in determining a probable genus or species? I purchased this specimen and have been unable to find images or research papers with similar examples.
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Hi all. I know it's been a long time since I've posted anything on the forum, but now that I'm back from college I'm planning on being more active. Today I wanted to post this odd fossil I found this past summer at a Hell Creek formation microsite in eastern Montana. I've never seen anything quite like it before, but my guess is that it's some odd denticle from a cartilaginous fish of some variety OR alternatively it could just be an odd fish tooth (maybe pharyngeal?). It measures about 4 mm from base to tip and a little bit over 1 mm at its widest. Any input would be appreciated. -Noel
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From the album: Dinosaurs
Edmontosaurus annectens Hell Creek Fm., Harding Co., SD, USA Partial dental battery Hadrosaurs had the most histologically complex teeth of any animal, with six unique tissues. This allowed for differential wear, creating an ideal coarse surface for grinding plant matter. (Erickson et al. (2012)) -
From the album: Dinosaurs
Acheroraptor temertyorum Hell Creek Fm., Garfield Co., MT, USA Note the diagnostic ridges. -
I have this tooth that i believe to be a small nanotyrannus but i just want to get confirmation so let me know what you think everyone. Its from the Hell Creek Formation. Garfield Ct. Montana. Its CH is 11 mm Serration count: Distal 12 per 3 mm Mesial 15 per 3 mm The base of this tooth is beat up so its impossible to see if it would have had that rectangular pinch that is characteristic of nano teeth. There seems to be no twist of the mesial carinae In my opinion the serrations look peg like as seen in nano teeth.
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This is from Hell Creek formation and 8 inches long. Seller named this 'Struthiomimus'. I compared it with some examples of ornithomimids from Hell Creek and I think this is a 3rd metatarsal of an ornithomimid.. If someone can verify? Thanks
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I’ve been going through some material that I collected this Summer in the Hell Creek of Southeastern Montana. I have this little theropod bone (measures approximately 14 centimeters). It is missing one end and has a little damage to the other. The bone is covered in a layer of siderite. I know that it is not much to go off of but am hoping someone might have an idea what it is. I can provide additional pictures if needed.
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I have been reading my copy that I have of The Tyrannosaur Chronicles, and in the chapter about prey, there was a picture that was captioned Hell Creek Prey. There were Edmontosaurus, Triceratops, Thescelosaurus, but there was also a sauropod. I looked through @Troodons topics about the hell creek fm and also the wikepedia page about hell creek fauna. Is the book outdated or is there actually a sauropod dinosaur in the Hell Creek Formation?
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Is this A Tyrannosaurus Rex or a Nanotyrannus tooth? Here's what I know: 0.75" (1.9 cm) Hell Creek Formation of Bowman County Nouth Dakota. @Troodon
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Hello, I recently acquired a small box of fossils from someone who had passed away recently. Inside were many fossils including those pictured. The only indicator of where they are from is that the box says "MONTANA". I can tell there are dromeosaur teeth, hadrosaur teeth, ankylosaur teeth and such. I know the man I got them from would routinely dig in the hell creek formation but I just wanted to make sure there wasn't anything obvious that I'm missing that would indicate that these fossils were collected elsewhere. My guess is that they are from the hell creek formation however. Any feedback is appreciated!!
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From the album: Hell Creek / Lance Formations
Lepisosteidae (scales) Hell Creek Fm., Powder River Co., MT, USA Cretaceous gar fish scales - though I may be wrong about the big one.- 1 comment
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From the album: Hell Creek / Lance Formations
Crocodilia (teeth) Hell Creek Fm., Powder River Co., MT, USA Cretaceous Crocodilian teeth - could be from Brachychampsa and/or Borealosuchus?-
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From the album: Hell Creek / Lance Formations
Ceratopsidae (shed/"spit" teeth) Hell Creek Fm., Powder River Co., MT, USA Labeled as "Ceratopsidae" because there are two valid genera currently known from Hell Creek: Triceratops and Torosaurus - whose teeth are indistinguishable. You commonly see teeth like these sold as "Triceratops" spitters, but this is not necessarily a correct identification.-
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It's Fossil Friday, so I have another fossil video ready. This is a prep of the Edmontosaurus neural arch I recovered in the video posted last week. A little background: Edmontosaurus Annectins, 66 millions years old (Maastrichtian) of the Hell Creek formation, Butte county, South Dakota. Recovered while digging with Paleo Adventures
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I know its not the most recent trip, but I finally completed the video for this annual trip to hunt for dino fossils in the Hell Creek fm of South Dakota. Next week I should have the video of the prep of the Neural arch and spines finished.
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From the album: Hell Creek / Lance Formations
Triceratops prorsus Hell Creek Fm., Harding Co., SD, USA More information-
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From the album: Hell Creek / Lance Formations
Mesodma sp. Hell Creek Fm., Garfield Co., MT, USA P4 (4th upper premolar) Mesodma was a genus of multituberculate mammal that lived in the same environment as many well-known dinosaurs. It must've been a hardy animal, given the genus survived the K-Pg extinction event.-
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