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Found 21 results

  1. Dermal Denticle? Lance fm. Wyoming

    Hi everyone. I found this little fossil recently while working through a sandy conglomerate matrix I brought back from this summer's hunt in Wyoming's Lance fm. I believe it's a dermal denticle from some variety of cartilaginous fish, my first guess would be the Hybodont shark Lonchidion, but the guitarfish Myledaphus is also incredibly common in these sediments, however I haven't seen any pictures of denticles belonging to the latter or close relatives. It's about 2 mm long and about 1.5 mm tall. I would love to hear some input. Thanks, Noel
  2. Associated? Bones?

    Hi all, sorry for the long post, in advance! I purchased these unprepped with some other stuff, but these bones have lines running thru these that almost looks like quartz? Is it glue that you can put on in the field? The pics don’t do it justice at all, it’s a translucent blueish green, second question I’ve got is, are they associated? They don’t seem to fit together, but they are all the same Color of bone and all the same color of line going thru it? Last question, if they’re are associated what did they come from, and what bones are they? @Troodon @jpc @hadrosauridae. TIA
  3. Possible theropod bone

    Hi everyone, this is a dinosaur bone I’ve been prepping, it was found on the lance fm in WY, it seems hollow and I was wondering if you could tell me if it’s a T-rex bone or a different theropod species, 8 1/4 by 3 1/2 TIA.
  4. Unidentified lance fm bone.

    Hi all, I was wondering if anyone can identify this for me my guess is triceratops frill but I’m not an expert.tia
  5. Didn't do the lick test on this one

    I found this odd little pebble in the Lance fm. in Wyoming over the summer and have yet to post on the forum so I thought I'd do so tonight. Anywhere else I probably wouldn't have kept it, but since I found it in a dinosaur bearing formation I was thinking it had the potential to be a gastrolith as it's completely smooth and rounded along with being a different color than most of the surrounding sediment I found it in, possibly hinting at transportation from its origin. I'd like to know your thoughts as I think it would be really cool to have found a dinosaur gastrolith. It's also not a piece of rabbit or deer scatt as it's not squishable (trust me I've accidentally picked them up before out there).
  6. Hi y'all. Inspired by Marco sr's post of his Riker Mounts a few weeks ago, here are a few of mine. These are all 6 inch by 4 inch Rikers. I took the glass off some to avoid reflections. If anyone wants to see better pix of any of these, let me know. Start with a pile of Lance Fm (late Cretaceous of Wyoming) bones and teeth. There are too many fossil in all of this to ID them all, so I will just label a few of my faves. If you want more IDs, just ask. Top left, two Leptoceratops teeth. The brown ones below the right Lepto tooth are baby hadrosaur teeth. Below, Hell Creek from Montana. The thing in the middle is one of the pelvis bones form a champsosaur. To its left, a croc claw, then a coprolite. Below, Cretaceous mammals... sorta. The ones labeld Montana (MT) are from the same site as above. It has late Cretaceous as well as early Paleocene fossils, which except for dinosaurs and mammals are mostly very similar. The three lower jaws are all classically Paleocene. I think the site has reworked Cretaceous stuff, but there is a paper out there claiming that the site has Paleocene mammals in the late Cretaceous. These small teeth really should be photographed under the microscope. And now for some Eocene fun. These are from one of my faviorite sites in the Wasatch Fm of southwestern Wyoming. The square thing in the upper left is a piece of bird eggshell. There are turtle pieces (including the blue one), a croc jaw piece, fish bones, a lizard scute, hackberry seeds, a lizard frontal bone, a Coryphodon ungual, and more in here. These are mosty mammal teeth from an Eocene site west of Casper. (Sorry it is out focus). If you look closely you will see a theropod tooth found in this Eocene site. One could argue that this is proof that dinosaurs survived into the Eocene, but I say poppycock. I have also found Cretceous shark teeth and pieces of baculites here. They are all, in my book, reworked from local Cretaceous beds into the Eocene beds. This last one is all mammals from the same site I mentioned above in the Wasatch Fm of SW Wyoming. Oops, I lied,the top right toe bone is form a turtle. The dark one in the upper left is a nice maxilla with 5 teeth. I have IDed it as Haplomylus. Thanks for looking. Hope you all enjoyed the show.
  7. Triceratops Lower Beak Section

    From the album Lance fm. Microsite Finds

    One of my coolest finds from the Lance formation, I found this back in 2017 but this is the first time posting an image of it on the forum. Triceratops sp. Late Cretaceous (Maastrichtian~ 66 mya) Lance formation
  8. Possible Leptoceratops tooth?

    I found this little tooth crown at a conglomerate site in the Lance formation a couple weeks ago on my fossil hunting excursion with Paleoprospectors. I wasn't sure what it belonged to, at first I thought it was a small Triceratops crown but under further examination I think it could belong to another herbivore. I looked at @Troodon's post on Leptoceratops from hell creek and saw similarities to the maxillary teeth. I wanted to know what some of the dino people thought about mine. It broke when I was trying to prep it out so the sheen is from the glue I used to put it back together. The tooth is about half a centimeter in height.
  9. Today was the last day spent in Wyoming and one of the most productive. This collecting area was definitely the most scenic among the spots we visited this week with a view of a wide open grassy valley with trees lining the Little Cheyenne River. I found a channel deposit site which had been worked in years past but had not been touched recently. I remained at this spot for the duration of the day, splitting through the conglomerate. The most abundant fossils were gar scales which appeared practically every split. I collected a number of small alligator teeth, myledaphus ray teeth and triceratops and hadrosaur spit teeth. Some of my best finds were pieces of shark spine and a thescelosaurus premaxillary tooth. Views of the collecting area A view of the open space A very small myledaphus tooth (lower right side) A gar scale preserved right next to a gar tooth A small Brachychampsa tooth (rear "molar like" tooth) A shark spine preserved next to a bivalve. Stay tuned for South and North Dakota next week!
  10. Another day hunting in Wyoming's Lance formation proved more successful than yesterday. Due to the high amount of rain Wyoming has been facing this year, many would be exposures were grassed in. We started at a channel deposit which was producing a number of bone pieces. Although bones were relatively plentiful, there were no spectacular finds with the best being a thescelosaurus vertebra found by another member of the group. My best find from this hillside was a section of Triceratops jaw, a partial crown found in the conglomerate where the fossils were eroding from. and some variety of small animal limb bone (reptile or mammal). Here are some pics from this site A hadrosaur spit tooth A piece of softshell turtle shell A bivalve The Triceratops crown After most of the people had left the site, I explored the surrounding area and found an anthill which proved to be very bountiful in the microfossils it produced. I found several small crocodilian teeth, a tiny myledaphus tooth, a gar tooth and a potential mammal tooth.
  11. Reconsidering this ID

    Hi everyone, I posted this vertebra a while back and the consensus was crocodilian, however after looking online at some varanid vertebrae (namely palaeosaniwa) I see a resemblance between the two. I want to know what people think. Below are what I found online.
  12. Closer inspection to my collection of bone pieces from trips to the Lance formation in Wyoming has resulted in me wondering if I had a few pieces of Ankylosaur osteoderm in my possession. I want to know what the folks on the forum think.
  13. Lance Fm. IDs

    Hey all, I found these over the summer in Wyoming's lance formation (Maastrichtian, upper cretaceous). I was hoping for some input on these specimens. First I believe is a small champsosaur vert, the front has a piece chipped off, but it measures 7 mm front to back and about 11 mm wide. Second I'm not so sure on, it's vaguely shaped like a coprolite which would be nice and would make it the second I found on this trip. It seems like it may be geologic. It measures 3.5 cm from top to bottom and has a diameter of about 1 cm.
  14. Sorry for the long wait for this post. I said I was going to do a write up for it in the days following my return, then once again in October and then after I had finished my trip report from my 2016 trip to Maryland's Potomac River back in December, but alas I never got to it. But now I'm finally sitting down to write about my experience from my week spent fossil hunting in Wyoming's badlands. I flew out of Boston in the morning of July 13th and landed in Denver by around mid-day. My parents got the rental car and we were on our way to eastern Wyoming. It was dinner time when we pulled into Laramie and we went to a Mexican Restaurant which had great food but gargantuan portions, we made our way back to the Comfort Inn we were staying at and soon got a grasp of how low quality it was. Sockets coming out of walls, old hairs on the bed, the scent of cigarette smoke permeating throughout the room, not quite as comfortable as advertised. The next day we left the motel in haste and went to the University of Wyoming's geologic museum, which had a number of great displays of fossils of which many were found within the state. Here are few shots of what we saw.
  15. T. rex Tooth Tip

    From the album Lance fm. Microsite Finds

    Tyrannosaurus rex Late Cretaceous (Maastrichtian~ 66 mya) Lance formation This was originally still attached to matrix but popped out after an attempt at revealing more of the tooth.
  16. Theropod Claw Confirmation

    And now my last fossil for the night, one of my favorite fossils in my collection ever is the theropod claw my dad found (I always give credit when he's the discoverer) in the Lance fm. of Wyoming the summer before last. It was identified by the guide as potentially being a Nanotyrannus hand claw but I wanted to confirm that with other members on TFF. It's about 2.5 cm in length.
  17. Bowfin Jaw Section?

    After looking through some of the material I brought back from this past summer's trip to Wyoming's Lance fm. I realized I had an odd little piece which I recognized as a section of jaw from something. After some digging I believe it's from some variety of amiid fish.
  18. Cretaceous Mammal Jaw?

    I found this the summer before last at a lance fm microsite. The interesting thing about this microsite is that many of the fossils come in a conglomerate matrix which contain pieces of bone, teeth and scales from basically everything that can be found in the area. The guide I was with believed this was a section of cretaceos mammal jaw, likely a larger mammal (for the time) like didelphodon. Unfortunately, none of the teeth were preserved with it so it would be hard to label it as anything beyond a general description. Also it is attached to a a larger piece of conglomerate with a small chunk of bone probably from a dinosaur. Here are both sides of the fossil.
  19. Thescelosaurus premax?

    Hi all! I feel like it's been too long since I last posted something of my own rather than commenting. Below is a picture of a tiny tooth which I initially believed to be crocodilian. I found it when surveying a promising anthill at a microsite in the Lance formation of eastern Wyoming. I was not disappointed! I ended up finding some very nice and very tiny fossils; a vertebra and a tooth both potentially myledaphus, a crocodile tooth (borealosuchus or other) and Richardoestesia tooth with almost invisible serrations! Nearby I found two tiny edmontosaurus teeth and a few partial croc scutes. I affectionately refer to this site by several names; 'The Whale Rocks" (as the harder gray capstones appear reminiscent of our cetacean friends), the sand box (due to the 'floor' of the surrounding area being covered in sand) or the 'Micro-Micro Site' as everything i've ever found there has been shrunken in size from your typical channel deposit. I want to know what you think of this piece which I now believe is one of the premaxillary teeth of the small herbivorous dinosaur Thescelosaurus and I other forum members agree with my analysis. (The tooth itself is only about 4 mm)
  20. Lance Formation Reptile Jaw

    Hey everyone! Feels like it's been a while since I've posted any of my finds. Life is busy as it can be at the moment so it's hard to find a time to post regularly. Here is a section of reptile jaw I found at a microsite in the Lance formation of eastern Wyoming. It was initially identified as belonging to a champsosaur, but I wanted to see what people thought on the forum. In the field: At home: (little un-erupted tooth)
  21. Hello, can you help me ID these bivalve? They are from the Lance Fm in eastern WY (Late Cretaceous). I'm sorry the pictures are not pristine. They are old and I do not currently have the shells with me to take new ones. Also, does anyone have any idea whether I can determine if they are aragonitic or calcitic at this point? Thanks!