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Found 21 results

  1. Finally ... a short trek on the open prairie of Eastern Colorado and into a slice of the Cretaceous period. This was my first true jaunt since my move from the East coast and it was a welcome change to my normal routine. My journey really began several years ago when I purchased some shark teeth from a fossil forum member in Colorado. He regularly visits a site on private land in Eastern Colorado that contains (what we think) are exposures of the Fox Hills fm. , and are chock full of marine fossils from that time period. I contacted him several weeks after I arrived, desperate to get away from civilization, and honestly just looking for someone I can chat with about geeky fossil stuff. The rolling hills of harvested wheat and corn stretched as far as the eye could see.... The exposure with the most fossil concentrations sat in a rust colored band of loose sand/sandstone. The best pockets contained shells where the teeth and bone settled. I was there without most of my usual equipment. I wasn't sifting or digging for much more than an hour before we had to leave and came home with plenty of matrix and fossils to keep me busy for several weeks. Shrimp-like trace fossils. As well as Squatina sp. and Sand Tiger Shark, Carcharias sp. teeth .. as well as small fish teeth, small fish vertebra etc. can be found. Good thing he had some small screens or all of these wonderful finds would still be on the sandy slope. Average size for these shark teeth is about 10mm. Cheers, Brett PS. I'll wash the matrix and post any additional micro-fossils here.
  2. Carcharias sp.

    From the album Misc. Cenozoic Specimens

    Carcharias sp. I believe it is a Carcharias.
  3. Carcharias acutissima

    From the album Misc. Cenozoic Specimens

    It's a shame this specimen was broken during removal.
  4. Carcharias hopei (Agassiz 1843)

    From the album Pisces

    36mm. Eocene From Khouribga, Morocco
  5. Carcharias acutissima (Agassiz 1844)

    From the album Pisces

    28mm. OMM Burdigalian Miocene Site: Billafingen, Baden-Wuerttemberg, Germany
  6. DKNC-002 Carcharodon carcharias (Sacaco)

    From the album Elasmobranchs

    TFF DKNC-002 Tooth height is ≈1-3/8 inches (3.5 cm)

    © David Kn.

  7. Recently I aquired this Carcharodon tooth from Sacaco, Peru whose serrate conditions seems a bit peculiar to me. I can't really decide whether or not this tooth is from a late-stage hubbelli or an early carcharias. The serrations seem to wear/taper off just short of the tip on one side and abruptly end near it on another, and some (although not all) of the serrations appears to be angled in a way, although I suspect some may be due to wear. My thoughts on the serrations keep seesawing in my head. Would this tooth better represent a late-stage hubbelli or a carcharias? Thanks for any and all answers. Lingual
  8. Colorado Cretaceous - Fox Hills 02

    From the album Sharks and their prey ....

    Carcharias sp (?) Cretaceous of Colorado Fox Hills Sandstone

    © Matthew Brett Rutland

  9. Colorado Cretaceous - Fox Hills

    From the album Sharks and their prey ....

    Carcharias sp (?) Cretaceous of Colorado Fox Hills Sandstone

    © © Matthew Brett Rutland

  10. Hello all, I hope you are having a fossiliferous New Year. To kick ours off, MomAnonymous and I went off to Brownies to check out the beach. It seems I really do need waders as I was unable to round the point even at low tide. We met @sharkdoctor on the point who had found an amazing bird bone in zone 10. We chatted for a bit, and he gave me a lot of information that could prove very helpful, and even invited me to a group hunt at Blue Banks. What a generous man. I get good luck when meeting other collectors! We putted around for a bit, finding some really nice sand tigers at one point and a lot of other, small teeth. Then we went to the bridge, where MomAnonymous found another symphyseal Physogaleus in the exact same spot as before! In all we got 137 small teeth. Not the best of days, but not horrible either. @Littlefoot @racerzeke @ShoreThing @WhodamanHD
  11. Carcharias sp. 01

    From the album Sharks and their prey ....

    Carcharias sp. Savannah River Savannah, Georgia

    © Matthew Brett Rutland

  12. Shark tooth fragment found on beach

    I’m eager for some help identifying this shark tooth fragment I found while beach combing on Hilton Head, SC. I’ve found many, many sand tiger shark teeth here over the years, but this is by far the largest. It’s only a fragment, but the size with the huge nodule on the root is so very different from what I usually find on the beach. Is this indeed from a type of sand tiger shark? I’d love to learn more about it.
  13. Hello guys and gals, I greatly appreciate this forum and thanks for welcoming me. I have a set of 4 teeth that I only know that are from Florida. I’m thinking Carcharias but I’m a noob so I’m not confident. As far as the crinoids, I got them as a “gift” after purchasing a tooth from a dealer. All he knew is they were crinoids from Dakhla, Morocco. I’m guessing Pennsylvanian? Any information would be awesome. Thanks guys/gals
  14. Shark tooth: Prionace or Carcharias?

    I'm not sure about the classification. This is the tooth in question: Shark tooth from Fiume Mareccchia, Italy I think it's a Prionace cf. glauca, @michele 1937thinks it's a Carcharias acutissima. Who can help? Carcharias acutissima with side cusps Prionace glauca without side cusps I don't think the tooth in question has side cusps, but I am not 100% sure. According to fossilworks, Carcharias acutissima is known from 43.0 to 5.332 Ma. Prionace is known from 5.332 to 0.012 Ma. Fiume Marecchia is Upper Pliocene, Zanclean to Piacenzian (younger than 3.15 Ma and Prionace glauca is mentioned in Sorbini's paper "BIOGEOGRAPHY AND CLIMATOLOGY OF PLIOCENE AND MESSINIAN FOSSIL FISH OF EASTERN-CENTRAL ITALY: That's mainly the reason why I decided for Prionace. Any thoughts? Thanks Thomas
  15. A nice tooth

    Since my new dust sucking unit still hasn't been delivered, I've been twiddling my thumbs and wondering half the time what to do with myself, so I decided to hop on my bike this afternoon and take a little tour. For some strange reason (), I ended up on the forest track where you can scratch around in the miocene sandy gravel a bit and since by chance I had my trusty swiss army knife in my pocket, I decided to do just that. I found a few little bits, including a tiny drumfish tooth, but this was the best of the bunch. A Carcharias tooth with a length of 18mm. and a complete root.
  16. Unknown Sand Tiger teeth

    Some teeth I found from Brownies that don't look like any other sand tigers I usually find. Many of them are very worn and broken. I'm no expert but my guess is that they are Eocene teeth. Any help is appreciated, thanks. Some of the larger ones
  17. Great White

    From the album Mitchu Fossils

    Biggest GW I have, 3"
  18. 3 UFOs amongst the Carcharias teeth

    I mentioned in an earlier topic that I'd discovered a little site in the Miocene Burgidalian where you can scratch small Carcharias teeth out of a sandy cemented gravel-like conglomerate. I was back there again today and found these: The largest one without the root is 15mm. long. There were however 3 objects amongst them which I don't really recognize, although I'm thinking that the last 2 may be drum fish teeth. Anyway, I'm hoping that one of you fish experts here in the Forum might recognize them and can point me in the right direction. I'm not even sure if this first one, of which I've made 5 photos, top, bottom and 3 different side views, is even from a fish. It measures 11x6x4mm. The next one is 5mm. long. And finally the 3rd one has a diameter of just 2mm. All of the photos were taken under the microscope. Thanks in advance for your help and advice.
  19. Are these all Carcharias teeth?

    I've been visiting a little site in the Miocene Burgidalian on and off where you can scratch shark teeth out of the fine sandy conglomerate of the upper marine molasse. They are all tiny, but cute, ranging in size from 6-15mm. They were deposited in a narrow arm of the Tethys ocean at the time when the sea was retreating for the last time out of southern Germany and Switzerland, being forced out by the steadily northward moving African plate which was causing the Alps to raise themeselves up into the heights. I guess it was a spawning ground for little sharks, the larger ones spending most of their time in the open sea to the south. Anyway, I don't know all that much about shark teeth, but I've been studying the various types of Carcharias teeth, which apparently make up the majority of teeth found in these layers. I'm just wondering if they all belong to this genus, or if maybe some other ones are there amongst them, or if at least different species are represented. For this reason, I'm posting some of them here in the hopes that someone in the know can have a look at them and tell me more about them. Perhaps in which part of the jaw they are lodged, or even if the one or the other tooth belongs to a different genus. I'll number the photos for better orientation. Thanks in advance for your help. 1 2 3 4 5 6 7 I was also wondering if the following object is a shell-crusher tooth or if it's just a tiny, shiny pebble. It has a length of 6mm.
  20. Great White

    A very uncommon species at Lee Creek. From the Pleistocene James City Formation, great whites are always nice to find.