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Found 13 results

  1. Is it looks a 'bite mark'?

    I saw this Madagascar ammonite on website and wonder hole(?) On its surface could be a bite mark. Actually, i've never seen bite mark like this but i looking forward to any new information about it. Thanks.
  2. Peculiar break or bite marks?

    I took some pictures of all the bison leg bones last night. After I was done taking pictures I was sitting on the couch next to where the were on the floor. Out of the corner of my eye I saw something odd that I hadn’t noticed before. There are lots of chips and breaks on these bones and I have just passed them all off just breaks, however this one is different. Have a look and tell me what you think. It kind of looks like something took a bite out of it. This is the angle that caught my eye. It is the lower end of the femur. The lateral epicondyle. If the bison were standing this would have been a bite to the back inside edge of the knee, kind of where the hamstring would attach in a human. It would be a good way to take a large animal down. Take note of the bottom edge. That is the lateral epicondyle. To the right of the big chunk missing there is a cluster of 4 small punctures into the bone. On the medial epicondyle there is another cluster of 4 puncture marks into the bone. To the right of them is a gouge in the bone. Close up pics below. Lateral condyle. Note the 4 punctures and possibly a 5th or it didn’t quite get a grip and it slid or something. Lateral condyle surface. You can see there is another puncture mark top left near the break (gray with mud in it). The other little holes are where blood vessels passed into the bone. The hole I speak of is a bigger hole with 2 tiny holes on its edge at about 3 and 4 o’clock. I probably should have put arrows or a circle. Diagram of human femur blood vasculature from googling so you can understand bone vasculature. The veins shown in the diagram are larger ones. There would be many little ones as well. That’s what all the holes are in the pic above, besides the largest hole on top left near break. A little bone anatomy explanation. The broken edge at back you’re looking upon is the lateral condyle. You can see the 4 puncture marks there. The other side facing away is the lateral epicondyle. The inside edges are condyles. The outside edges of these structures are epicondyles. The edge closest is the medial epicondyle. It also has 4 puncture marks and a gouge. This shot is ooking down on the break. It is a different texture than parts of the bones I have found that broke recently from falling off the bank, broken while in situ prior to extraction, broken during extraction. . . So the break happened a while back postmortem and had time to weather and smooth the bone a little or it happened while the animal was alive and it didn’t die immediately and the body tried to heal a little. I don’t know which. I tend to think the latter. This is the other femur for comparison that looks completely healthy (besides being dead). That remind me me of Bones from the original Star Trek. “It’s dead Jim. I’m a doctor not a magician.” Or something along those lines. Close set up of the marks on the medial epicondyle. If the marks are from a bite mark, it’s a strange tooth pattern. Puncture marks on the lateral condyle surface. What do do you all think? Maybe cleaning out the puncture marks better would shed more light. Thoughts and comments would be appreciated.
  3. Mini Mosasaur collection

    From the album Marine reptiles and mammals

    A little collection of assorted mosasaur fossils from 2 different places that I got when I first started collecting. 2 different types of vertebrae, one is mosasaur, and the other is a questionable claim of mosasaur, a corprolite that was claimed to be that of a mosasaur, a tooth, & 7 rib fragments. 2 ribs have predation marks, as well as the large vertebra. The large vert has a round tooth indent on the very center. The 2nd rib down has tooth scratches along the surfaces, & 3rd rib down has a round tooth indent in the center, which is probably what caused a strip across the middle to break off. There are 2 other tooth marks on that rib as well, forming a diagonal line from above left of the center indent, breaking off a piece along the top, to below right.
  4. From the album Permian era fossils

    Reverse side of the unidentified Edaphosaurus pogonias bone with an apparent Dimetrodon tooth hole.
  5. Edaphosaurus with large predator bite

    From the album Permian era fossils

    Yet unidentified Edaphosaurus pogonias bone from the Permian era Red Beds site in North Texas, with large unhealed tooth hole from what appears to be a large Dimetrodon's bite, from either the fatal attack, or post-death predation mark.
  6. Hello to everyone, I found an interesting pattern cleaning an unidentified bone and would love to hear your opinion. This bone arrived covered in soft sandstone, according to the seller it came from Taouz, Errachidia Province, South Morocco. I identified it as a sauropod, probably diplodocoid but i'm only an amateur so I will love to hear what you think. after I cleaned the surface with a rotating brush it revealed multiple bite marks in varies size and depth. From what I red and saw online, I figured that these are raptor bite marks. Do you agree? Does it rare to find so many bite marks on one bone? Thanks a lot!
  7. I just prepped this Elrathia kingii I found last year. It’s more 3-dimensional than most of them. It also has a slight reverse C-shape curve to it. It’s left side was covered with matrix when found, but after removing the matrix, almost nothing was actually found under it. Looks like something took a big bite out of it. Can anyone hypothesize what the damage actually is caused by? Link to images: https://imgur.com/gallery/wzDoG
  8. Help! this Ammonite (Oxytropisoceras so?) is about 8 inches across, its from Texas, does this look like a bite mark? any idea what would have done the biting? I've done some searching but just don't seem to be finding this "type" of bite (maybe my daughter's 4 year old?)
  9. Bite Marks?

    Hi all, I recently went to Sharktooth Hill and collected a few bones and plenty of teeth. Wondering if there are bite marks on this small bone. There are three deep grooves on the bone which I suspect are bite marks. May be wrong though.
  10. Dugong rib predation marks?

    I noticed that fossil dugong rib bones from Florida often have boring worm holes in them, though these are not predators per se, and have heard that shark marks can be found. Any other kinds of marks I should look out for? How common is it to find shark bite marks on the ribs?
  11. Theropod Vertebra

    From the album Reptile Fossils

    Cervical vertebra of a theropod dinosaur (possibly Spinosaurid) with series of scratches on one side. It is likely that these scrathes are gnaw marks from different animals due to the different sizes of the marks. Location: Kem Kem beds, Morocco Age: Cenomanian, Upper Cretaceous

    © Olof Moleman

  12. Hi all, I recently acquired a very nice turtle fossil (Anosteira maomingensis) from a local shop. Upon closely examining this fossil, I realized it has more to it than meets the eye, and I highlighted several spots that I would like verification on from you guys. Are those what I think it is? Two possible bite marks, a honeycomb structure under its shell, and its possible skull or bone material? More close-up pictures below.
  13. Ghost Shark

    From the album My fossil art

    Framed Meg Teeth. Before people start going off on me hahahaha FYI, we DO know its not accurately depicted, we DO know they are technically backwards, we DO know we are missing some. This is an artistic representation for the customer representing a portion of meg teeth found in one hole!
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