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Found 6 results

  1. Summerville June 23 2017

    From the album Summerville, SC Fossil Hunts

    Hemipristis serra Galeocerdo aduncus Physogaleus contortus Sphyrna sp.

    © Matthew Brett Rutland

  2. Smooth Tiger

    Hey all, This isn't so much a Fossil ID as it is a question. Can Tiger Shark teeth have smooth cutting edges if they're worn down enough? If so, then this tooth would certainly attest to that. I'm fairly certain that it came from the jaws of Physogaleus contortus (technically not a Tiger, but I call it one anyway). The strange thing is that it almost entirely lacks a defining feature of Tiger Shark teeth: serrations! The only evidence of a serrated edge are on the distal shoulder, but even there they are incredibly worn down. On the blade of the crown itself, the cutting edge is perfectly smooth, like a Hammerhead tooth. My question here is not if teeth can be worn down, because I know this. Some are so worn that they become unidentifiable! My question, rather, is why is the rest of this tooth hardly worn down at all while the serrations are doing a disappearing act? Do serrations on fossilized sharks teeth erode faster than the rest of the tooth? Thanks in advance for any help.
  3. Serious Serrations

    Just thought I'd share some cool pictures I took with my macro lens, getting up close and personal with the knife-like serrations of a few teeth that I've found on my trips. Enjoy!
  4. Hey Folks, Got this tooth in the spoils pile at the Aurora Fossil museum. I think it is a Physogaleus contortus symphyseal tooth, looking for confirmation or alternatives. It is 1/2 inch on slant. Thanks, Tony PS @MarcoSr, @siteseer, @sixgill pete, @Al Dente
  5. Female Physogaleus

    From the album Eocene vertebrates of Ukraine

    A - female anterior B, C - female laterals
  6. Physogaleus contortus (Gibbes 1849)

    From the album Pisces

    aka Galeocerdo contortus. 17mm. Tiger Shark. From the Miocene at Calvert Cliffs, MD. Recieved on a trade with Fossil Hound.
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