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  1. Staycie07

    What is this?

    Found this in St. Clair, Pennsylvania in slate quarry on private property. Each piece is 2.5 inches width by 9 inches length. I love it but don't know anything about it. Any help would be much appreciated. Thank you.
  2. I found this nice specimen while hunting for 'white fern' plates out in Centralia, PA. Based off of the size, shape and definition, I'm curious if its a seed of some sort? I left the seed un-prepped with the white silicate mix still present, would love help with an ID
  3. chuck62

    Deer Pond PA

    Some nice finds today....
  4. Steveosaurus

    Fossils from the new guy

    I'm brand new to Fossil Forum, and can't afford the big splashy wall display fossils, so my "collection" is modest, but it's a start. I have three of these fern plates from St. Clair, PA, and two diplomystus fish fossils from the Green River formation in Wyoming.
  5. From the album: Carboniferous Plant Fossils in My Collection

    This shale piece is 14 inches wide and 8.5 inches tall. It contains at least 3 species of fossil plant leaves as shown.

    © Copyright (c) 2019 by Michael Tomczyk. All rights reserved.

  6. From the album: Carboniferous Plant Fossils in My Collection

    © Copyright (c) 2019 by Michael Tomczyk. All rights reserved.

  7. hitekmastr

    Cordaites

    From the album: Carboniferous Plant Fossils in My Collection

    Cordaites were very large leaves that resembled corn leaves, with parallel grooves running the length of the leaf.

    © Copyright (c) 2019 by Michael Tomczyk. All rights reserved.

  8. hitekmastr

    Lepidodendron

    From the album: Carboniferous Plant Fossils in My Collection

    © Copyright (c) 2019 by Michael Tomczyk. All rights reserved.

  9. hitekmastr

    Lepidophylloides

    From the album: Carboniferous Plant Fossils in My Collection

    These fossils that look like blades of grass are actually similar to pine needles.

    © Copyright (c) 2019 by Michael Tomczyk. All rights reserved.

  10. hitekmastr

    Neuropteris

    From the album: Carboniferous Plant Fossils in My Collection

    © Copyright (c) 2019 by Michael Tomczyk. All rights reserved.

  11. hitekmastr

    Pecopteris

    From the album: Carboniferous Plant Fossils in My Collection

    © Copyright (c) 2019 by Michael Tomczyk. All rights reserved.

  12. hitekmastr

    Alethopteris

    From the album: Carboniferous Plant Fossils in My Collection

    © Copyright (c) 2019 by Michael Tomczyk. All rights reserved.

  13. hitekmastr

    Annularia

    From the album: Carboniferous Plant Fossils in My Collection

    © Copyright (c) 2019 by Michael Tomczyk. All rights reserved.

  14. hitekmastr

    Sphenophyllum_Pennsylvanian_St Clair

    From the album: Carboniferous Plant Fossils in My Collection

    © Copyright (c) 2019 by Michael Tomczyk. All rights reserved.

  15. hitekmastr

    Sphenophyllum_Pennsylvanian_St Clair

    From the album: Carboniferous Plant Fossils in My Collection

    © Copyright (c) 2019 by Michael Tomczyk. All rights reserved.

  16. hitekmastr

    Trigonocarpus3b.jpg

    From the album: Carboniferous Plant Fossils in My Collection

    This is another view of the same Trigonocarpus, this view showing the open end of the seed. Seeds of seed ferns - this was probably from Medullosa - had open ends to allow pollen to enter. It is thought they were fertilized by pollen when they dropped into the water although a few paleobiologists believe insects may have pollinated them through the opening. Also why were the seeds encased in a fruit like covering (like avocados)? To be consumed by creatures that lived in the shallow swamp water?
  17. From the album: Carboniferous Plant Fossils in My Collection

    This Trigonocarpus fossil from St. Clair is an exceedingly rare pairing that includes the compression (fossil) and impression (cast) in matching pieces. If you look very closely you can see there is a short stem connecting the seed to the Alethopteris stem. Finding these connected is VERY rare. Also, if you look closely you can see some sort of structure revealed in the very center of the seed.
  18. I have been trying to find a reasonable solution for preserving St. Clair fossils, which are mineralized in white, yellow and orange colors. Cleaning with water dissolves the colors. Coating with most types of glue will also remove the color, turning white fossils to black! I experimented this week with decoupage, which seems to preserve the white mineralized fossils without changing them, and gives the specimen a glossy sheen. I am interested in this because the colors of St. Clair fossils are fairly robust, but can flake off over time, and may suffer from oxidation. My reason for posting is to ask if anyone has good reasons to NOT use decoupage to preserve and seal St. Clair fossil specimens? Here is a photo one the first one I tried, which is a small fragment - note the glossy sheen, and also how the color and detail was preserved. Decoupage looks milky when applied but dries clear. I want to verify that this is a good approach before trying this on larger speciments, some of which are 1 to 2 feet in size.
  19. I'm compiling a list of plant fossils found at St. Clair. Does anyone have a starting point, or better yet a list of St. Clair fossil types? Thanks.
  20. hitekmastr

    St. Clair Fossils

    Hi fossil friends - I've been away from the board for a couple of years, settling into retirement, now getting back to some fossil fun. I'm sorting through my St. Clair inventory which is now pretty large since that was where my wife and I did most of our collecting when the site was still open. So now I have quite a few plant fossils and am organizing and prepping them - not sure what I'll do with them. These two items are the last fossils we collected from St. Clair before they closed the site - the large one is 25 inches long and was cut by someone (probably the idiots who ruined the site access). Most pieces are smaller and individual specimens. I'm organizing, labeling and putting in Riker mounts now. Interested in any suggestions how to proceed? I also have a collection of unique mangal shoots we collected at a secret site in central New York which are unique and probably somewhat rare.
  21. oilshale

    Fern non det.

    From the album: Plants

    Fern non det. Upper Carboniferous Llewellyn Formation St. Clair Pennsylvania USA
  22. oilshale

    Fern non det.

    From the album: Plants

    Fern non det. Upper Carboniferous Llewellyn Formation St. Clair Pennsylvania USA
  23. Jeffrey P

    Neuropteris leaf from St. Clair, PA.

    From the album: Carboniferous from PA.

    Neuropteris decipiens (leaf) Pennsylvanian Llewellyn Formation St. Clair, PA.
  24. Jeffrey P

    Pyrite fern from St. Clair, PA.

    From the album: Carboniferous from PA.

    Mariopteris cf. lobata (partially preserved in pyrite) Pennsylvanian Llewellyn Formation St. Clair, PA.
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