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Found 2 results

  1. fossilsonwheels

    Show us your Squaliformes teeth !!!

    I have decided to create some collection threads for various shark teeth. I would like to use these to promote some of the less frequently seen shark teeth. We see plenty of Megatooth, GW's etc but some pretty awesome sharks do not get much love here. I wanted to set this up by taxonomic orders and see what my fellow shark nuts want to share. I think this is a great way to not only share our collections but also build a database that may help help collectors ID teeth or get some idea of what exists to be collected. I love Squaliformes sharks. They are among the the most biologically interesting sharks to have existed. Among the truly fascinating adaptations they have are bioluminescence, biological antifreeze for extreme cold temperature survival, protruding jaws in one species and even pockets ! They represent the smallest sharks but some such as the Pacific Sleeper and Greenland Shark can grow very large. The Greenland Sharks are the oldest known vertebrates on the planet with life spans of possibly longer than 500 years and are the slowest swimming fish. The Largetooth Cookiecutter shark has the largest teeth per body size of any living shark. They are also weird looking sharks that can capture the eye. Google search Rough shark or Pocket Shark or the Viper Dogfish. They are bizarre looking creatures yet perfectly adapted to some of the harshest environments on our planet. For shark tooth collectors they present numerous challenges. Many are deep water sharks with few known fossil locations. Some types of Squaliformes may only be known from one or two fossil sites. Many are small sharks with very small teeth which add to the difficulty in finding them. Rarity creates demand and my experience has shown me that not only are they hard to find, collectors hold on to their Squaliformes teeth. I am not even sure how far back they go in the fossil record as Fossilworks notes Triassic Squaliformes from France but I found no available information beyond a notation. I apologize for the long introduction and biological information that most of you probably know. I am bored educator with no one to educate about sharks lol I would encourage my fellow TFF members to share not only your teeth but your knowledge and fun facts swimming around your brain about the amazing and weird Squaliformes.
  2. I am still not back to work so I’m pretty bored and don’t have new micro matrix to pick through so I have been examining some STH micros I found in previously searched matrix we got from @JBMugu awhile back. One of the denticles I found stood out from all others. I only found one of this morphology in all the matrix I searched. I set it aside in it’s own bag in with the other denticles. I forgot about it until a search for papers on Echinorhinus fossils. I saw a photo of Echinorhinus denticles and I remembered the denticle I found. It looks so similar that I think that is what this little beauty is. I also believe we might have a tiny Squatina vertebra. I found a post on TFF about them and remembered a strange little vert I found. Under the scope, it looks very similar to a vertebra from a published paper that was in the TFF post. It’s not fish or mammal. It’s also not typical shark or typical of the other STH batoid vertebra we found. For now I’m going with Squatina but I’ll use pencil on the label. Once I get a chance to get to my museum again, I’ll get better pictures and try to confirm the ID’s. Until then, here are a couple of cell phone pics that won’t do them justice lol
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