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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.
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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
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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.
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St Clair Plant Fossil_ShalePlate_FrontView with Fossil ID
hitekmastr posted a gallery image in Member Collections
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.
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Trigonocarpus_Alethopteris_Attached_Right Half_St Clair PA_Michael and Nancy Tomczyk
hitekmastr posted a gallery image in Member Collections
From the album: Carboniferous Plant Fossils in My Collection
© Copyright (c) 2019 by Michael Tomczyk. All rights reserved.
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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.
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From the album: Carboniferous Plant Fossils in My Collection
© Copyright (c) 2019 by Michael Tomczyk. All rights reserved.
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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.
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From the album: Carboniferous Plant Fossils in My Collection
© Copyright (c) 2019 by Michael Tomczyk. All rights reserved.
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- plant fossil
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From the album: Carboniferous Plant Fossils in My Collection
© Copyright (c) 2019 by Michael Tomczyk. All rights reserved.
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From the album: Carboniferous Plant Fossils in My Collection
© Copyright (c) 2019 by Michael Tomczyk. All rights reserved.
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- alethopteris
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From the album: Carboniferous Plant Fossils in My Collection
© Copyright (c) 2019 by Michael Tomczyk. All rights reserved.
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From the album: Carboniferous Plant Fossils in My Collection
© Copyright (c) 2019 by Michael Tomczyk. All rights reserved.
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- sphenophyllum
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From the album: Carboniferous Plant Fossils in My Collection
© Copyright (c) 2019 by Michael Tomczyk. All rights reserved.
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Eusphenopteris (3)_Llewellyn Formation_Pennsylvanian_St Clair PA_Pennsylvanian
hitekmastr posted a gallery image in Member Collections
From the album: Carboniferous Plant Fossils in My Collection
© Copyright (c) 2019 by Michael Tomczyk. All rights reserved.
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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?-
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Trigonocarpus attached to Alethopteris frond.jpg
hitekmastr posted a gallery image in Member Collections
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.- 1 comment
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- alethopteris
- cabroniferous seed
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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.
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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.
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- llewellyn
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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.
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Forgive me if I'm being impatient or repeating myself--I'm new to this site and forum. I tried posting this under Questions and Answers a while ago and haven't seen it appear yet--maybe there's an approval process that has to run its course before a post appears publicly. In case I just didn't get it entered correctly I'll try again under this heading, which I didn't see at first. ANYWAY . . . . Does anyone have experience removing iron stains from St. Clair, Pennsylvania plant fossils? The white mineral that provides the striking contrast with the slate is pyrophyllite, a silicate. As an avid mineral collector (sorry, not too knowledgeable about fossils, even though I grew up in eastern Iowa--I decided I couldn't be an expert on both and settled on minerals) I am familiar with using Iron Out, Waller's solution, oxalic acid, etc. to remove iron oxide stains from mineral specimens. Can iron oxide stains be removed (or at least lightened) on St. Clair fossils by soaking in one of those reagents? They shouldn't affect the pyrophyllite chemically, but I can see how removing the iron oxide could disrupt the coating physically. I do not intend to scrub them--I'm sure that would do more harm than good. Any other suggestions? Thanks!
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From the album: Plants
Fern non det. Upper Carboniferous Llewellyn Formation St. Clair Pennsylvania USA- 1 comment
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From the album: Plants
Fern non det. Upper Carboniferous Llewellyn Formation St. Clair Pennsylvania USA-
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Some more items from the Llwellyn formation at St. Clair that I'm trying to pin the ID down on. I have found oodles of these in some layers at St. Clair and the rounded shape makes me think they are Cordaicarpus seeds. However, there is not enough detail for me to be sure. Someone also suggested then could be fish scales but they have no blue tint (which is from the phosphates found in bones and scales) nor ornamentation. Thoughts?
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- carboniferous
- ferns
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