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Showing results for tags 'pennsylvanian'.
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From the album: Llewellyn Formation Plants of Pennsylvania
Alethopteris valida Late Pennsylvanian Llewellyn Formation St. Clair, PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Cyclopteris sp. Late Pennsylvanian Llewellyn Formation St. Clair, PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Eusphenopteris lobata Late Pennsylvanian Llewellyn Formation St. Clair, PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Annularia stellata Late Pennsylvanian Llewellyn Formation St. Clair, PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Sphenophyllum emarginatum and Alethopteris serlii Late Pennsylvanian Llewellyn Formation St. Clair, PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Sphenophyllum emarginatum and Neuropteris ovata Late Pennsylvanian Llewellyn Formation St. Clair, PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Alethopteris serlii Late Pennsylvanian Llewellyn Formation St. Clair, PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Macroneuropteris macrophylla Late Pennsylvanian Llewellyn Formation St. Clair, PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Alethopteris serlii Late Pennsylvanian Llewellyn Formation St. Clair, PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Alethopteris serlii Late Pennsylvanian Llewellyn Formation St. Clair, PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Lepidostrobophyllum hastatum Late Pennsylvanian Llewellyn Formation St. Clair, PA -
From the album: Llewellyn Formation Plants of Pennsylvania
Asterophyllites longifolius Late Pennsylvanian Llewellyn Formation St. Clair, PA -
I visited a coal mine last weekend with a group, and we had a good time finding Carboniferous era fossils. There were large volumes of plant fossils. I did find a few marine fossils (brachiopods) also. I found the "thing" below as well, which mystified me. I found it splitting a rock, and there was a counterpart as well. I did not retain the counterpart, perhaps I should have (it was broken). Formation: Pottsville Group Age: Pennsylvanian Period, Westphalian-A (312 million years old) .Jefferson County, AL Anyone know what this might be?
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With the nicer weather last week, I was able to make two brief trips to kick of the year. There still ended up being a lot of snow on the ground, but it was manageable. My first trip was to one of my favorite sites, a roadcut in the Pennsylvanian LaSalle Limestone in Illinois. Lots of the usual stuff was found, but the two trip makers were a small Peripristis shark tooth and a Linoproductus mass mortality plate. Here's the tooth. I think it will clean up nicely. And here are the Linoproductus. There's around 50 individuals present, and they are all quite small compared to most Linoproductus specimens I find at this site. This is probably the best brach plate I've found here. Here's a random shot I took of the headwall. Most of the common brachiopod species at this site are visible. A few days later I had a couple hours free in the morning and checked out some new Ordovician spots in southern Wisconsin. Here's a neat roadcut I drove past, showing the contact between the Ancell and Sinnipee Groups. The lower unit is the St. Peter Sandstone and the upper unit is the Pecatonica Member of the Platteville Formation. The Glenwood Shale is the narrow shale unit between the two. The site I ended up hunting was in the Grand Detour Member of the Platteville. In this area it's mostly dolomite, and most fossils are internal molds. The preservation is thus not great, but splitting rock can yield nice mollusks on occasion. Here's a typical example of the molluscan hash. This large Ctenodonta was a nice treat. It's about 6cm at the widest dimension. The trip maker was a coiled nautiloid, the first I've found. I am not sure on the ID. It measures about 2cm in diameter.
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- brachiopod
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Split the limestone, and when tying to cleave down the rock, split the fossil. Lucky for me, it split in between the inside and outside shell. Going to glue it back together with paraloid. Highly probable Metacoceras.
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- carboniferous
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I am having trouble putting a label on this cephalopod from the Upper Pennsylvanian, Graham formation, Finis Shale member, from Jacksboro Texas. The conch is crushed on the anterior end which distorts the apical angle but the intact posterior end shows an angle of around 12º and the cardinal ratio is about 2. My first thought was bactrites but if that is the siphuncle it appears to be very near but not quite in contact with the ventral wall, which I thought was a requirement for the whole subclass. It looks a little like the “doubtful” genus Cylobactrites with the foldlike ribs and missing ventral lobe, but the treatise shows those to be Mid-Denonian. Maybe the ribs could be described as annulations and the siphuncle as subventral making it a nautiloid like some Brchycycloceratidae but B. normale and B. curtum are all I see on the fauna list for the site and they have much large apical angles at around 22º and 40º. Any ideas?
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This fossil was found at the North Attleboro fossil site, and I’ve had it marked down as a species of Sphenopteris but i’m not 100% certain
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I put this on the microfossil forum as well, but wanted to give a look-see to this intriguing fossil! In my search for conodonts in Pennsylvanian stark shale (between Winterset and Bethany falls limestone) I routinely find concretions/nodules-most are powdery but sometimes i find teeth and other microfossils. Well much to my surprise, upon splitting my thousanth shale, I found a 1cm nodule, and within it, this apparent micro sea urchin-one of two in the nodule. From spine to spine (7:00-1:00) it measures just under 2mm in diameter I am refining my photog techniques with a newly purchased leica M420, phototubes, and a sony A660 camera, which produced this first photo of one of the conodonts. I am intrigued by these tiny urchins (if that is truly what they are! ). Thoughts, comments and any hope of specific i.d. on this or the conodont appreciated!!!!! (and how this wound up in the anoxic shall layer)-wasn't a surface find contaminant, but found upon splitting shale.....so ~300million years? thanks again all!...... Bone
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I tried to fix these pics with GIMP but this is the best I could get. Found at the Caney River in central N.E. Oklahoma It is at an angle and is concave, one half to two inches long. It is kind of leaf shaped with a series of raised bumps through the center. Further to the right, reminds me of a tiny mud daubers nest which the wasps have grown and left. Thank you.
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Hi. This is on the Caney River, middle of Washington County in northeastern Oklahoma. It's in very hard matrix, can't do more than make a scratch on matrix surface. Pennsylvanian. Abou4" long, no more than 5" long. In the third picture what looks like a crack across the middle is just a shadow. Thank you.
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Hello again Fossil friends! I have another fossil I need help with. Found with other shell and coral fossils in a river shore in north eastern Kansas, most likely Pennsylvanian. It looks to be maybe a sponge with exterior and interior... structure? Couldn't figure this one out. Maybe someone with more knowledge can ID it for sure.
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From the album: Chondrichthyan Teeth From The Pennsylvanian Period
One of my favorites as it has a variety of color, from dark blue to orange and a pale yellowish white-
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Hello Fossil friends! I have a couple fossils(?) I'm going to see if I can get help identifying. I found all of them in the same local area of a river shore in northeastern Kansas, so I'm assuming Pennsylvanian time frame. I have some fossils that are obvious shells and coral, but these I'm not sure and would like your input! If you need more photos or angles, let me know. #1 I think is a fish vertebrae that's slightly flattened. It's about 1 cm x .3 cm.
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Hi. Found among the huge limestone layer at the Caney River in central Washington County, northeastern Oklahoma. Pennsylvanian. It's a little closer to Kansas than to Tulsa. A few miles east of the Osage Hills (or Rolling Hills of the Osage, depending on the which map).
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There are fossils in the background gray sedimentary, but so much better preserved in brown! Why? Almost like this pile of creatures is on display, a 7 inch blob just laying on top of gray stone. I'm more interested in how these were preserved than what they are.
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