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Showing results for tags 'Llewellyn'.
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From the album: Fossil Collection: DC Area and Beyond
Plant Tremont, PA Llewellyn Formation Carboniferous (Late Pennsylvanian)- 1 comment
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From the album: Llewellyn Formation
Pecopteris Schuylkill County, Pennsylvania-
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A few weeks ago @Jeffrey P and I met up in Eastern Pennsylvania to collect plant material in the Late Pennsylvanian Llewellyn Formation. We started our day at Centralia and then made our way to another site. I have visited Centralia a few times now but Jeff had never been there before. Our hope was to find Jeff a nice Trigonocarpus seed but unfortunately our efforts did not come up with anything. The pickings at Centralia were rather slim. However, we did see in-situ a large segment of Stigmaria ficoides root with rootlets. I ended up only keeping a few finds. The first is this Sphenopteris sp. I also kept this plate with several Lepidodendron branches After about an hour we made our way to the second site and spent the rest of the day there. I love to visit this site because I seem to keep finding something new on every visit. This time around I decided to break down a huge block and ended up with a lot of exciting finds. Lepidostrobophyllum lanceolatum Cross section of a Calamites cistii trunk showing the cell structure Asterophyllites longifolius Asterophyllites sp. Terminal Shoots Asterophyllites sp. (including this really big Calamites branch) Sphenophyllum emarginatum Cyclopteris fimbriata(?) Cyclopteris sp. I have found other seed ferns at the site before, but Laveineopteris rarinervis is definitely the most common fern. It also seems to be the only fern of which you will find blades. While splitting the large block down, I ended up breaking on a plane that exposed multiple Laveineopteris rarinervis blades. Unfortunately the largest blade was cut off by the end of the rock. Perhaps against my better judgment I decided to carry the huge plate out. Even after cutting off the excess rock at home it is still very heavy. And just because it would not be a hunt in the Llewellyn Formation without me finding something that I totally don't know what it is, here is a mystery plant.
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From the album: Llewellyn Formation Plants of Pennsylvania
Annularia stellata Late Pennsylvanian Llewellyn Formation Schuylkill Co., PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Stigmaria ficoides Late Pennsylvanian Llewellyn Formation Schuylkill Co., PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Mariopteris decipiens Late Pennsylvanian Llewellyn Formation Schuylkill Co., PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Cyathocarpus arborea Late Pennsylvanian Llewellyn Formation Schuylkill Co., PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Neuropteris flexuosa Late Pennsylvanian Llewellyn Formation Schuylkill Co., PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Sphenophyllum longifolium Late Pennsylvanian Llewellyn Formation Schuylkill Co., PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Lepidodendron Branch Late Pennsylvanian Llewellyn Formation Schuylkill Co., PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Lycopodites meekii Late Pennsylvanian Llewellyn Formation Schuylkill Co., PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Cyperites bicarinatus Late Pennsylvanian Llewellyn Formation Schuylkill Co., PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Calamostachys Sp. Late Pennsylvanian Llewellyn Formation Schuylkill Co., PA -
Last weekend I took advantage of the warm weather to visit my favorite exposure of the Llewellyn Formation in Eastern Pennsylvania and collect some Late Pennsylvanian plants. I had not been to this site in some time but I was inspired to visit it again by some recent Llewellyn Formation fern finds by @frankh8147. I had the site to myself except for the noise of nearby ATVs and BMX bikes whose riders were also seeking to take advantage of the great weather. Despite temperatures in the fifties, there was still snow on the ground. I spent about 4 hours digging out and splitting large blocks of shale. What I like about this site is that you don't get the mash of dozens of plants on top of each other. Although the dark color shale makes it sometimes hard to see the plants, when you find a clearly visible example, the plant tends to be well preserved. As I am learning, this site seems to also have a wonderful diversity of Late Pennsylvanian flora. Overall the trip was a great success until the end of the day. As I was attempting to carry down my collecting bin with all of my finds, I tripped and crashed the bin into a large rock. While I survived the fall with only a couple scraps on my hand, the bin was totally destroyed and so too were most of my better finds. A view of the site Calamites appears to be the dominant flora at the site. Here is a large Calamites cistii trunk with my hand for scale Unfortunately the block was full of cracks and did not hold up, but I did find these cool smaller pith casts inside it I also found a really large block with several whorls of Asterophyllites equisetiformis. Unfortunately the piece was at the bottom of my bin and was totally obliterated during the fall. Here is all that I was able to save The first of several new finds for me were this partial and this immature Calamites cone (Calamostachys sp.)! Some of my favorite finds at this site are the remnants of lycophytes. I am yet to find an outer bark impression, but I have found several pieces showing the subepidermal surface. Here is an example of Sigillaria tessellata Cyperites bicarinatus Lycopodites meekii Lepidostrobophyllum lanceolatus Lepidodendron sp. Branches I thought this Sphenophyllum longifolium whorl was pretty cool due to its size and shape of the leaves Here are some of my better fern finds I was really excited to find my first ever Mariopteris decipiens with a partial Lepidodendron sp. branch on the piece too Cyathocarpus arborea This Cyathocarpus arborea would have been one of my best fern finds ever, but it too fell victim to my fall and did not survive. At least I have a photo! Laveineopteris rarinervis Neuropteris flexuosa I am still working on identifications for the rest. Last, but certainly not least, are a couple of mystery fossils. This plant appears to be vine-like with alternating leaves on either side. I have seen nothing like it in the literature . This plant is almost whisker-like, with thin radiating leaves that do not appear to connect to any central point I hope to make it back out to this site soon and hopefully continue finding new flora to add to the collection. Fingers crossed that I don't fall again!
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From the album: Llewellyn Formation Plants of Pennsylvania
Macroneuropteris macrophylla Late Pennsylvanian Llewellyn Formation Northumberland Co., PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Macroneuropteris macrophylla Late Pennsylvanian Llewellyn Formation Northumberland Co., PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Macroneuropteris macrophylla Late Pennsylvanian Llewellyn Formation Northumberland Co., PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Neuropteris ovata Late Pennsylvanian Llewellyn Formation Northumberland Co., PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Macroneuropteris macrophylla Late Pennsylvanian Llewellyn Formation Northumberland Co., PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Acitheca polymorpha Late Pennsylvanian Llewellyn Formation Northumberland Co., PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Crenulopteris acadica Late Pennsylvanian Llewellyn Formation Northumberland Co., PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Unknown Branch with Smaller Branches Late Pennsylvanian Llewellyn Formation Northumberland Co., PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Cyathocarpus arborea Late Pennsylvanian Llewellyn Formation Northumberland Co., PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Cyathocarpus arborea Late Pennsylvanian Llewellyn Formation Northumberland Co., PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Pecopteris sp. Late Pennsylvanian Llewellyn Formation Northumberland Co., PA