Fossils Found at the Ludlowville and Moscow Formations at the Lake Erie Cliffs on the mouth of 18 Mile Creek in NY


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Fossils here include:
Trilobites

The trilobites insisted on playing football with the pleurodictyum, and therefore had to be moved to a separate page

Nautoloids, Brachiopods, Crinoids, Coral, Bryozoan, Unidentified stuff

(The smallest divisions in the ruler are 1/8")


Nautoloids

? sp.
Straight shelled Nautoloid
This appears to be some sort of poorly preserved straight shelled nautoloid.

Formation:
  • Hamilton Group: Wanakah Member (Ludlowville Formation) or Windom Member (Moscow Formation)
    Age:
  • Middle Devonian, ~387 - 378 m.y.
    Location:
  • Hamburg, Erie Co., NY
    Size:
    • Spyroceras ?sp.
    I beleive this is an imprint of a Spyroceras sp., a type of straight shelled nautoloid. Sorry the scan is so bad..

    Formation:
  • Hamilton Group: Wanakah Member (Ludlowville Formation) or Windom Member (Moscow Formation)
    Age:
  • Middle Devonian, ~387 - 378 m.y.
    Location:
  • Hamburg, Erie Co., NY
    Size:
    • This is a tiny fragment of another one.

    Formation:
  • Hamilton Group: Wanakah Member (Ludlowville Formation) or Windom Member (Moscow Formation)
    Age:
  • Middle Devonian, ~387 - 378 m.y.
    Location:
  • Hamburg, Erie Co., NY
    Size:



    • Brachiopods

    Athyris spiriferoides (Eaton ....)
    The easiest way to find these specimens is by slowely combing the beach at the water line.

    Formation:
  • Hamilton Group: Wanakah Member (Ludlowville Formation) or Windom Member (Moscow Formation)
    Age:
  • Middle Devonian, ~387 - 378 m.y.
    Location:
  • Hamburg, Erie Co., NY
    Size:

    • Longispina? mucronatus? (Conrad)
    pyratized shells
     For some reason, this type of brachiopod is often found pyratized
    These pyratized brachiopods are fairly common in these formations.
    Another one can be seen in the 1st Phacops image on this page.

    Formation:
  • Hamilton Group: Wanakah Member (Ludlowville Formation) or Windom Member (Moscow Formation)
    Age:
  • Middle Devonian, ~387 - 378 m.y.
    Location:
  • Hamburg, Erie Co., NY
    Size:
  • ~3/4" (18mm)

    • Another one can be seen in the 1st Phacops image on this page.

    Formation:
  • Hamilton Group: Wanakah Member (Ludlowville Formation) or Windom Member (Moscow Formation)
    Age:
  • Middle Devonian, ~387 - 378 m.y.
    Location:
  • Hamburg, Erie Co., NY
    Size:
  • ~1/2" (12mm)

    • Rhipidomella sp. (Hall)
    This is the front and back view of a Rhipidomella. These fossils are very flat and fragile

    Formation:
  • Hamilton Group: Wanakah Member (Ludlowville Formation) or Windom Member (Moscow Formation)
    Age:
  • Middle Devonian, ~387 - 378 m.y.
    Location:
  • Hamburg, Erie Co., NY
    Size:
  • ~7/8" (22mm)

    • Spirifer macronatus (Hall ....)
    In this first image, the two halves of the shell started to come apart before it fossilized, creating this interesting specimen. The second image shows how they are commonly found.

    Formation:
  • Hamilton Group: Wanakah Member (Ludlowville Formation) or Windom Member (Moscow Formation)
    Age:
  • Middle Devonian, ~387 - 378 m.y.
    Location:
  • near Hamburg, Erie Co., NY
    Size:

    • Formation:
  • Hamilton Group: Wanakah Member (Ludlowville Formation) or Windom Member (Moscow Formation)
    Age:
  • Middle Devonian, ~387 - 378 m.y.
    Location:
  • Hamburg, Erie Co., NY
    Size:
    • This one is still in matrix

    Formation:
  • Hamilton Group: Wanakah Member (Ludlowville Formation)
    Age:
  • Middle Devonian, ~387 - 378 m.y.
    Location:
  • near Hamburg, Erie Co., NY
    Size:

    • Stropheodonta demissa (Conrad ...)

    Formation:
  • Hamilton Group: Wanakah Member (Ludlowville Formation) or Windom Member (Moscow Formation)
    Age:
  • Middle Devonian, ~387 - 378 m.y.
    Location:
  • Hamburg, Erie Co., NY
    Size:




    • Crinoids

    Whole crinoids are difficult to find. Usually just fragments are found.
    This is part of an unidentified crinoid stem and what appears to be a decomposed calyx (head), as some calyx fragments are visible in the debree just above the stem.

    Formation:
  • Hamilton Group: Wanakah Member (Ludlowville Formation)
    Age:
  • Middle Devonian, ~387 - 378 m.y.
    Location:
  • Hamburg, Erie Co., NY
    • Crinoid colomn pieces are commonly found near the beach shore.
    The lower crinoid colomn section has the bryozoan, Leptotrypella sp., encrusting it.

    Formation:
  • Hamilton Group: Wanakah Member (Ludlowville Formation) or Windom Member (Moscow Formation)
    Age:
  • Middle Devonian, ~387 - 378 m.y.
    Location:
  • Hamburg, Erie Co., NY
    Size:
  • ~1/4" Diameter (6mm)
    • NO IMAGE YET: This fossil is still being prepped, and should be finished by early June.

    This is part of a crinoid calyx.

    Formation:
  • Hamilton Group: Wanakah Member (Ludlowville Formation)
    Age:
  • Middle Devonian, ~387 - 378 m.y.
    Location:
  • Hamburg, Erie Co., NY
    Size:
  • ~1/4" Diameter (6mm)


    • Corals

    Pleurodictyum americanum
    (single cell coral)
    All of these specimens were found by carefully searching the beach at the water line.
    Notice the Pleurodictyum growing on a Spirifer in the lower image.

    Formation:
  • Hamilton Group: Wanakah Member (Ludlowville Formation) or Windom Member (Moscow Formation)
    Age:
  • Middle Devonian, ~387 - 378 m.y.
    Location:
  • Hamburg, Erie Co., NY
    Size:

    • Stereolasma rectum
    (horn coral)
    Abundant specimens can be found by searching the beach at the water line. Also, the ones at the water line tend to be polished by the waves.

    Formation:
  • Hamilton Group: Wanakah Member (Ludlowville Formation) or Windom Member (Moscow Formation)
    Age:
  • Middle Devonian, ~387 - 378 m.y.
    Location:
  • Hamburg, Erie Co., NY
    Size:


    • Bryozoan

    Hederella sp.
    This is a an interesting image of Hederella sp. growing all over a piece of horn coral (Stereolasma rectum).

    Formation:
  • Hamilton Group: Wanakah Shale Member (Ludlowville Formation)
    Age:
  • Middle Devonian, ~387 - 378 m.y.
    Location:
  • Hamburg, Erie Co., NY
    Size:

    • Rhombopora sp.
    NO IMAGE YET

    This is a close-up of the Bryozoan on the matrix with the pyritized shell and the enrolled Phacops rana.

    Formation:
  • Hamilton Group: Wanakah Shale Member (Ludlowville Formation)
    Age:
  • Middle Devonian, ~387 - 378 m.y.
    Location:
  • Hamburg, Erie Co., NY
    Size:


    • Unidentified stuff
    If you konw what any of this stuff is, please let me know, thanks!


    Some kind of Nautoloid?
    Due to the poor preservation, I have no clue what this is.

    The diagonal "striations" along the sides are also throwing me off (although they are probably the key to getting this thing identified). The striations can be seen better in the zoomed in image. Although, not clearly visible, these "striations" occur on both sides of the specimen, and appear to run its length.

    Formation:
  • Hamilton Group: Wanakah Shale Member (Ludlowville Formation)
    Age:
  • Middle Devonian, ~387 - 378 m.y.
    Location:
  • Hamburg, Erie Co., NY
    Size:




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