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Found 9 results

  1. This looks similar to some jawless fish bone I’ve seen. Could this be some? Ordovician, Wisconsin, Dane county, Madison.
  2. SilurianSalamander

    Jawless fish? Nothing? Big Brachiopods?

    Hello! I found these fossils(?) at Estabrook park which is part of the Devonian Milwaukee formation. They appear to be external moulds. These were found near the Lindwurm and Berthelet Members. Are these jawless fish? Big brachiopods? Non-fossils? I’m stumped on these. The formation is known for its plants, giant fungi, jawed and jawless fish, Cephalopods, and Conulariids. So sorry for the lack of scale! I need to start carrying a tape measure with my fossil hunting backpack.
  3. SilurianSalamander

    I’m thinking ostracoderm or placoderm bone?

    Never seen this texture on a brachiopod or bryozoan before. Found in Wisconsin gravel.
  4. Marco90

    Spinosaurus aegyptiacus

    From the album: My collection in progress

    Spinosaurus aegyptiacus Stromer 1915 Location: Kem Kem Beds, Morocco Age: 95 Mya (Cenomanian, Upper Cretaceous) Measurements: 7x2 cm Kingdom: Animalia Phylum: Chordata Subphylum: Vertebrata Class: Reptilia Subclass: Diapsida Superorder: Dinosauria Order: Saurischia Suborder: Theropoda Family: Spinosauridae
  5. Marco90

    Merycoidodon culbertsoni

    From the album: My collection in progress

    Merycoidodon culbertsoni Leidy 1848 Location: Brule Formation, White River Badlands, South Dakota, USA Age: 34 - 23 Mya (Oligocene, Paleogene) Measurements: 3x6,5 cm Kingdom: Animalia Phylum: Chordata Subphylum: Vertebrata Class: Mammalia Subclass: Theria Superorder: Laurasiatheria Order: Cetartiodactyla Suborder: Tylopoda Family: Merycoidodontidae
  6. The tooth was on the eastern u.s coast near Florida and the tooth is around 2 cm
  7. austinswamp

    Canine Teeth ID

    Good afternoon, I was hoping to get an ID on these teeth I found today in a Creek here in Austin, Texas. I have found artifacts at the same level belonging to Late Pleistocene. First picture has a large modern dog tooth on the left side for comparison. Thank you
  8. Today, instead of bemoaning the paucity of marine cretaceous rocks in my state, I reframed the situation as follows: "In the Cretaceous, most of Missouri was not ocean but land, with lots of exposed limestone that dinosaurs were likely walking around on." This led me to the following question: Do we have no fossil examples of dinosaurs that fell in sinkholes / caves / paleokarst and were preserved there, perhaps discovered during quarrying of the limestone? We definitely have such examples for fossil mammals, reptiles, etc., including Pleistocene (Ocala), Pliocene (Pipe Creek Jr.), and Miocene (Gray Fossil Site)... So why not earlier? Why not dinosaurs? Surely there were paleokarst processes in action during dinosaur times. As possibly useful information, there was definitely regional hydrothermal activity here in the Mesozoic, based on the Jurassic emplacement age of southern Illinois fluorite.
  9. Fossil-Hound

    Otodus obliquus

    Three specimens acquired from a trade with @gavialboy Specimens are from an undisclosed location within the Aquia Formation linked to Purse State Park.
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