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Found 9 results

  1. The piece measures to be .5 inches by .65 inches and I barely noticed the worn serrated edge, anyone have an idea what it is ?
  2. This was apparently published in September 2018, but it slipped past me and I’m posting it here in case it slipped past my fellow thresher lovers. The allusive serrated giant thresher has been named Alopias palatasi. Of course if you like Trigonotodus better, it is Trigonotodus palatasi. Now when I add one to my collection in the far far future, I can finally put a good label to it! Here is the description: https://www.researchgate.net/publication/327871783_Kent_Ward_2018_Alopias_palatasi
  3. Happy holidays everyone. I would greatly appreciate help identifying the following specimen. It was collected in the Santa Susana Mountains of Simi Valley, Ventura County, California. It came from the Saugus or Pico Formation. Saugus is late Pleistocene to late Pliocene while Pico is middle Pleistocene to Pliocene. My uncertainty regarding the exact formation arises from the fact that (1) it was float material already weathered out of the formation it came from and (2) based on limited research and knowledge, I believe there has been a lack of consenus regarding differentiation of the two formations (see recent work by Richard Squires et al. in Valencia and R. Squires in Newhall). I assume it is marine since all of Pico is marine and Saugus is non-marine to marine. At first I thought it was a shark tooth when I picked it up but I threw that thought out the window when I realized it had three serrated edges. Measures 22 millimeters long and 6.5 millimeters wide. It is 4 millimeters tall on one end and 9.5 millimeters tall on he end that has the needle structure. There are three to four 'bumps' on both long sides on the end with the needle. The bumps look evenly spaced. I can and will do my best to provide additional info if needed.
  4. Hybodus

    From the album Sharks and fish

    Hybodus Houtienensis shark spine Permian to Cretaceous shark (impressive!!!!!) beautiful serration teeth down the back.
  5. Basilosaurus molar still attached

    From the album Marine reptiles and mammals

    Basilosaurus isis molar(one side serrated, the other side smooth)still embedded in a small piece of jaw bone. sadly I don't have any information about the fossil other than it is B.isis, and was found in Egypt.
  6. This has a serrated edge. Shark??

    Hi all, last post tonight... actually it’s now today! Yikes!! This is another one from my friends collection that is interesting with the serrated edge and all. Do you think it’s a shark tooth?? Thank you in advance, Jax
  7. Dino tooth?

    I've found this small tooth (1 cm (0.4 in) long) in the Jura Mountains (Switzerland). Can somebody help me identify this fossil? Thank you!
  8. Serrated Cretaceous Shark Tooth

    Sorry I don't yet have a picture of this tooth. This is not a squalicorax. The tooth crown is smooth, and there are small serrations at the base of both the mesial and distal sides. The tooth has no root. It came from an assemblage that accumulated on an off-shore sand bar. This was found a couple of miles south of Cabezon Peak in north-central New Mexico. Any ideas about a non-squalicorax serrated tooth? Thanks! Randy
  9. Went collecting in one of my favorite Miocene localities last week. Didn't find a lot, but did find this interesting shark tooth in situ in the mid-Miocene Choptank formation. Looks like a good match for Isurus escheri, which is generally considered a European species. It even has the small cusplets that European escheri usually have. I have never seen it documented over here in any publications, but there is really no good reason it couldn't cross the Atlantic. I have seen a few others, but they were generally beach found, without good stratigraphic data. I would be curious to see serrated makos that others have found in the Eastern U.S.
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