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Found 8 results

  1. Jeffrey P

    Nautiloid Orthocones from Altoona, PA.

    Jeffrey P posted a gallery image in Members Gallery

    Nautiloid Orthocones from Altoona, PA.

    From the album: Silurian

    Unidentified Nautiloid Orthocones Late Silurian Mifflintown Formation Sam's Club Altoona, PA.
  2. Jeffrey P
    Gastropod Internal Mold from Bellwood, PA.

    From the album: Silurian

    Homotoma sp. Gastropod Internal Mold Late Silurian Mifflintown Formation Bellwood, PA.
  3. Jeffrey P
    Silurian Brachiopod Matrix from Altoona, PA

    From the album: Silurian

    Brachiopod Matrix Late Silurian Mifflintown Formation Sam's Club Altoona, PA.
  4. Jeffrey P

    Brachiopod Matrix from Bellwood, PA.

    Jeffrey P posted a gallery image in Members Gallery

    Brachiopod Matrix from Bellwood, PA.

    From the album: Silurian

    Brachiopod Matrix Late Silurian Mifflintown Formation Bellwood, PA.
  5. Jeffrey P

    Athyrid Brachiopods from Bellwood, PA.

    Jeffrey P posted a gallery image in Members Gallery

    Athyrid Brachiopods from Bellwood, PA.

    From the album: Silurian

    Whitfieldella nitida Athyrid Brachiopods Late Silurian Mifflintown Formation Bellwood, PA.
  6. Jeffrey P
    Rhynchonellid Brachiopods from Altoona, PA

    From the album: Silurian

    1.) Homeospira marylandica 2.) Camarotoechia neglecta 3.) Sterhynchus andrewsi Rhynchonellid Brachiopods Late Silurian Mifflintown Formation Sam's Club Altoona, PA. Thanks to Shamalama Dave for ID help
  7. SteveE

    Silurian - crinoid vertebra?

    SteveE posted a topic in Fossil ID

    Central PA, Mifflintown-Bloomsburg (undividied) Block collected from roadsite float. Its pretty variable, with a flaky/fissile layers alternating with slightly more cohesive ones. Lots of broken brachiopod bits. For an experiment to I dropped an unremarkable flake the size of a large coin in some vinegar and let it soak for a day. The flake had a couple brachiopod bits and I wanted to see if they would fall free or dissolve in place. The brachiopds disappeared and I was left with this (see pics). Of course I got really excited and thought I had an early fish spine, but now I thin
  8. Shamalama

    Trying To Id Silurian Rynchonellids

    Shamalama posted a topic in Fossil ID

    Hey guys, I've been puzzling over some brachiopods that I've found at a site in PA that exposes the Mifflintown formation. This is a Silurian aged rock formation that is dated to about 428-420 mya (Sheinwoodian to Gorstian stages). It corresponds to the McKenzie formation in Maryland and West Virginia and a part of the Clinton Group in New York. The brachiopods are all Rhynchonellid types and look very similar. I've been able to split them into three somewhat distinct types based on the sulcus depth and size. Below is a picture of specimens of each type with the labels that I think go with th
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