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Found 5 results

  1. 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? T
  2. I was wondering what the general consensus is on what Palaeocarcharodon's ancestors are. Inwas also hoping some of you could share pics of your early or transitional palaeo teeth. cheers!
  3. britishcanuk

    Interesting lower GW tooth from Peru

    I picked up this interesting Peruvian GW tooth. It looks like some minor damage, but upon closer inspection it appears to be part of its natural morphology. Looks like a transitional tooth, thoughts?
  4. One thing that it seems we do not take as seriously as we should is transitional shark teeth. Scientists have, for centuries attempted to condense specimens into individual species, calling those that do not fit in "odd" teeth and focusing on their neat little groupings. What we forget is that this only represents certain points on the graph, with an infinite amount of possible points in between each! This post was created to allow our community to commemorate and share their best transitional shark teeth specimens from any species, even if those are not confirmed. It is these seemingly extran
  5. fishgator

    Pros Stumped By 3 In. Fish-Gator

    This fossil was inherited so unfortunatly I don't know the background on it. The creature within is approximatly three inches in length. It appears to have skin like an alligator with the tail of a fish, most resembling a coelocanth tail. My interest in the fossil was renewed after reading about the discovery of tiktaalik. Unlike other supposedly pre-tetrapod fishes, there is no sign of any anterior fins (besides caudal) or appendages. This has given pause to some professional paleontologists who will not even hazzard a guess as to whether what I have is, as I believe, even a vertibrate. (I ca
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