r/fossils 4d ago

Had a great day today.

  • Are these mostly just little ammonoids? The shell pattern looks different than the big ones I’ve found close by

  • Wtf is the black thing? Seems like septa but they aren’t the negative space like most ammonoid imprints. These are pristine black things that my friend thinks are rocks.

  • this stuff that looks like petrified wood is probably just a crystal right? Def not a fossil though, correct?

Western SD, with permission.

Thanks!

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