Bill Heim

  • 3 days, 12 hours ago
    Bill Heim posted a new activity comment

    Lower tooth of a lemon shark

  • 3 days, 12 hours ago
    Bill Heim posted a new activity comment

    Need images of both sides

  • 3 days, 12 hours ago
    Bill Heim posted a new activity comment

    Now placed in a separate Family Aetobatidae. Also Order should be Myliobatiformes

  • 3 days, 13 hours ago
    Bill Heim posted a new activity comment

    Size and large serrations make it look like Carcharodon carcharias vice megalodon. I also don’t see remnants of the chevron shaped bourlette. Note: Specific Epithet does not include the C. Also genus is capitalized, species is not. So it should read Genus – Carcharodon. Specific epithet – carcharias – family Lamnidae). Author is (Linnaeus). Parens indicate the genus was changed from the original but the species is the same. Make changes and I will mark it as Research grade. It is from an unusual location.

  • 3 days, 13 hours ago
    Bill Heim posted a new activity comment

    Charlie, the correct genus for megalodon is Carcharocles or Otodus (not fully resolved yet). Not related to Carcharodon (great white shark).

  • 3 days, 20 hours ago
    Mary Jane Hughes and Bill Heim are now friends
  • 1 week, 1 day ago
    Bill Heim posted a new activity comment

    Unusual enamel bumps on lower part of labial enamel does not fit with other Squalus (S. serriculus) from location. Larger than other Squalus I have collected from site. Either a new species or a variation due to age. Not pathologic due to lack of enamel irregularities caused by pathology.

  • 1 week, 4 days ago
    Bill Heim posted a new specimen.

    Bill Heim has contributed specimen mFeM 56447 to myFOSSIL!

  • 1 week, 4 days ago
    Bill Heim posted a new specimen.

    Bill Heim has contributed specimen mFeM 56442 to myFOSSIL!

    • Unusual enamel bumps on lower part of labial enamel does not fit with other Squalus (S. serriculus) from location. Larger than other Squalus I have collected from site. Either a new species or a variation due to age. Not pathologic due to lack of enamel irregularities caused by pathology.

  • 2 weeks, 1 day ago
    Bill Heim posted a new activity comment

    Carcharodon is correct. I cannot do anything with Shark.sp. I can correct the names but it would be too much work. If it is close (like Isurus in this case) I will fix it, but not Shark.sp

  • 2 weeks, 1 day ago
    Bill Heim posted a new activity comment

    Genus changed to Carcharodon (direct ancestor of the Great White)

    • I know and understand the current idea of its name/family line. As they change almost daily, I do not choose to change labels. The next step will be all labels will read Shark.sp

      • Carcharodon is correct. I cannot do anything with Shark.sp. I can correct the names but it would be too much work. If it is close (like Isurus in this case) I will fix it, but not Shark.sp

  • 2 weeks, 3 days ago
    Bill Heim posted a new activity comment

    Probably a silky shark (I would have to see the other side to be sure), not a tiger shark.

  • 2 weeks, 3 days ago
    Bill Heim posted a new activity comment

    Lower lemon shark tooth.

  • 2 weeks, 3 days ago
    Bill Heim posted a new activity comment

    3 different fossils, please only 1 fossil per page. Please delete.

  • 2 weeks, 3 days ago
    Bill Heim posted a new activity comment

    Examine the blade carefully with magnification. If it has serrations (even small ones) it is not Negaprion. It looks like a lower Carcharinid possibly a bull shark lower. Also the specific epithet is never capitalized (brevirostris) only the genus (Negaprion).

  • 2 weeks, 3 days ago
    Bill Heim posted a new activity comment

    Hemipristis serra, H. elongata is the modern species which lives in the Indian Ocean and Western Pacific. Correct the species name, add an image of the other side (labial side) and add the author (Agassiz) and I can mark it as research grade as you have a scale bar already included.

  • 2 weeks, 3 days ago
    Bill Heim posted a new activity comment

    Lemon shark, not a thresher.

  • 2 weeks, 3 days ago
    Bill Heim posted a new activity comment

    Lower tooth of a Carcharhinid, species indeterminate.

  • 2 weeks, 3 days ago
    Bill Heim posted a new activity comment

    Also update Eon, Era, Period.

  • 2 weeks, 3 days ago
    Bill Heim posted a new activity comment

    Eagle ray, Aetobatis sp. lower jaw file.

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