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  1. The idea that sensory pits were present in Theropod dinosaurs is not a new one, but for some reason I can't find any information on them and chat GPT says the presence of these structures in dinosaurs lacks fossil evidence. Below I present sensory pits in the jaw of an alligator and in the jaw of Albertosaurus. These pits are also known to be present in the jaws of some birds. In birds and crocodilians these sensory pits are believed to be used to detect vibrations in different substrates ( water for crocodilians and wood/soil for birds) in order to enhance prey detection and capture. My idea for sensory pits in Theropod dinosaurs (the ones that had them) is that they may have been used to detect prey in rotting logs or in shallow burrows. Why would large theropods have them? It is generally believed that young theropods were obviously alot smaller than the adults and probably ate things like insects or small vertebrates. I believe it is very likely that young Theropods used these sensory pits to help them locate these small animals that would be in substrates like wood (rotting stumps?) or soil. It's possible they were able to detect vibrations in the ground from approaching animals as a defense mechanism while they slept. It seems probable to me that these sensory pits may have been retained into adulthood by animals like Albertosaurus, etc...and lost by others. Of course these are believed to be present in piscivores like Baryonyx and Spinosaurus as well, which probably would have used them to enhance their fishing abilities. I intend to do some research into this and see if these sensory pits appear to be more common in juveniles ( where available) and how wide spread they were among Theropods in addition to the implications for feeding habits, etc in these animals as they aged. I would be interested in hearing some of your ideas about this.
  2. I found this tooth on private property in the Lance Formation, and I wanted to know what y’all think. Dr. Bakker told me ceratopsian (Lepto if I remember correctly). He said it was one of the teeth oriented toward the front of the mouth. I’m inclined to believe him, but has anyone else seen this before?
  3. I found this very hard and heavy petrified fossil? off a hill in a ravine by a natural spring on our property after clearing some land. It has kind of a porous exterior. Perhaps part of the head of the bone broke off partially over time? scapula? A rancher said it looks like a cow bone. It is so old and heavy I just don’t know if I buy that. Is it possible timing wise that it would be a fossilized cow or is it possibly prehistoric? Thank you for having a look. not sure of time period to look at.
  4. Hello! I found this fossilized bone a few days ago after the big tides in the Jurassic of the Boulonnais region (North of France). I can’t seem to place it… The cell structure looks dinosaur to me, not marine reptile. Would anyone be acquainted with this type of material and have any idea? Thank you very much! IMG_0855.mov
  5. Sorry that I don't have details of this specimen's provenance, but I'm trying to help an older friend remember what exactly this is a fossil of. They've had it for over 20 years, and believe they may have acquired it from online auction site in its early days. All I've been able to determine so far is that it is likely a dinosaur tibia. He's quite a fan of hadrosaurs, but I really have no idea if it's possibly from one. It's a fairly large specimen, about 26 in/66 cm long and 5 in/12.7 cm wide at the widest point: I know this is quite challenging without supporting information, but unfortunately any information related to this is missing, and was likely lost in a house fire that occurred years ago. Just hoping to get lucky and see if anyone has any sort of insight. Other photos attached (sorry that they seem to just be rendered full sized without a smaller preview, though that's more of a form limitation than my doing). Thanks..
  6. treasureme

    What's ia this fossil skull dino

    I need help identify anyone guidance is appreciated Video_2024-03-15 18_53_02_127.mp4 Video_2024-03-15 18_44_41_676.mp4
  7. KatrinaCraig

    Is this real a fake dinosaur claw

    Hi, my son found this on a beach. It's most likely fake but wanted to see what it is. Thanks.
  8. rocket

    Dinosaur bone ID

    Need an ID approx. 16 - 18 cm (around 7") long bone from KemKem / upper Cretaceous, Cenomanian Looks like a vertebrae process, but I am not sure first Idea was an partly eroded tail vertebrae, but... what do you think?
  9. Hi, I've been offered this bone and would love an ID on it if anyone has any ideas. It was acquired from a show and is labeled to be from Badlands in SD. Any ideas on what it could be from would be appreciated. 10" long x 4" high x 3" wide approx
  10. These were sold to me stating they came from the East Bluff area in Newport Beach, California. But research into fossils from that area comes up with late Pliocene material that doesn’t look anything like these. The serrated tooth is especially confusing. Any ideas?
  11. Hello everyone! Saw this nannotyrannus tooth for sale,is it really from nannotyrannus? Could it be something else? Any help would be apperciated IMG_8742.MOV dn02-2c.avif dn02-4c.avif dn02-3c.avif
  12. aeginah

    Dinosaur tooth ? Bone?

    Found this digging in the sand at rollover pass texas. It's very heavy and I have never seen anything like it. I have found wild hog, camel and horse bones but this doesn't look anything like them. I used Google lens and it wasn't much help. Can anyone help?
  13. Crystal Gale

    Possible dinosaur skin??

    Can someone please help me identify this? I found it at our camp site on the Chattahoochee river in Chattahoochee County Georgia. I’ve been researching and it seems to be very similar to some of the pictures of fossilized skin….. Any ideas would much be appreciated. Thanks so much!
  14. Jessclusively

    Fossil identification please

    Hello, if anyone could give me a general idea of what these are, that would be super helpful. Thanks so much & these are from east tn near the smoky mountains or Appalachia
  15. FB003

    HC dino vert ID

    Hi all, Looking for some help on this ID. I have thoughts but I'll keep it to myself so as not to influence anyone. Curious what you all might think. Found in Garfield County, Hell Creek Formation. Base is about 3 1/2 inch wide and 4 inches high with a total height of around 7 inches. Depth is 4.75 inches.
  16. Hi. I was wondering if anyone knows about the laws regarding purchase of dinosaur fossils from Morocco, Niger or other African locations. It seems that they could be legally prohibited but these are some of the most common locations I see fossils for sale from. Also many places selling them are large legit companies that say they were legally collected. I have read that it sounds like Morocco does have ability to export but only with certain registered dealers but I’m not sure. I was wondering this because I would like to add fossils from some of these dinosaurs to my collection but I don’t want to do anything sketchy. Thanks in advance for any info on this!
  17. In the green setting of the 'bishopric garden' in Limoges, a large exhibition entitled 'luminous odyssey' is being held. I went to see it with my family (3 generations, with our granddaughter) and I absolutely have to let you enjoy this very special dinosaur.... enjoy...
  18. dongmin

    Please delete the post

    suchomimus claw Please delete the post I don't know how to delete a post, so I would like to ask you to delete the post about Suchomimus claws.
  19. ThePhysicist

    Hell Creek collage

    From the album: Hell Creek Formation Microsite

    A representative sampling of the diversity captured in microsites - everything from Tyrannosaurus to mollusks.
  20. ThePhysicist

    Shed hadrosaurid teeth

    From the album: Hell Creek Formation Microsite

    Typical shed hadrosaurid (Edmontosaurus) teeth, a.k.a. "spitters." Most are river tumbled and missing their enamel. These teeth are quite common, as Edmontosaurus was abundant and regularly shed them from its arsenal of hundreds. A) teeth in occlusal view
  21. Hello everyone:)! I recently learned about this forum from someone else,There is a very good communication atmosphere here. So I want to show here my collection of fossils (and a few mineral specimens). (My English level is not very good,Therefore, I may often use translation software to support my speak.)
  22. Hello! I see this psittacosaurus skull on internet. It seems real? Is small the sizes are 6.5 5,3 4,1 cm Thank you so much.
  23. Bailey79

    Dinosaur egg

    I believe i ave a dinosaur egg with embryo still attached can anyone tell me where i should have it confirmed at
  24. musicnfossils

    Dinosaur Egg?

    Hey y’all, super curious about this potential egg as I’ve never found one before. Could be just a strange rock but I had to be sure. Apologies for the lack of measurements I misplaced my measuring tape but I can provide better photos as soon as I find it. Dinosaur park formation, steveville AB
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