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Showing results for tags 'pennsylvanian'.
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The first Palaeozoic spider (order Araneae) from Germany
paleoflor posted a topic in Partners in Paleontology - Member Contributions to Science
L.S., It has been almost four years since I found an unidentified arachnid fossil in the Westphalian D (Late Carboniferous) of the Piesberg quarry near Osnabrück, Germany. The little critter received a warm welcome here on TFF, being awarded the July 2019 IPFOTM and later even given the honour of 2019 IPFOTY. At the time, I was happy to announce that the specimen had gone to dr. Jason Dunlop of the Museum für Naturkunde in Berlin (an expert on fossil arachnids) for further study. Today, I'm thrilled to give another update! Yesterday, the detailed study by dr. Dunlop culminated in a really nice open-access publication in PalZ, which can be downloaded HERE. The Piesberg-fossil turns out to be a new species and the first "true spider" from the Palaeozoic of Germany (so a spider from the order Araneae as opposed to early spider-lookalike arachnid groups such as the trigonotarbids or phalangiotarbids). The fossil (now a holotype) has been donated to the Museum für Naturkunde, where it is conserved under repository number MB.A. 4298. This has been a great experience, as I learned a great deal about arachnids and spiders and spinnerets along the way. Hope you'll enjoy reading dr. Dunlop's paper as much as I did! Kind regards, Tim Reconstruction of Arthrolycosa wolterbeeki Dunlop 2023 Reference: Dunlop, J.A. (2023) The first Palaeozoic spider (Arachnida: Araneae) from Germany, PalZ, published online 16 July 2023, https://doi.org/10.1007/s12542-023-00657-7
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Hey everyone! Here are two of my findings from the most recent trip to pit 11 (Mazonia-Braidwood) that just opened. I would very appreciate any help with ID! 1. This is a worm-shaped structure that I don't think is a polychaete - I am not seeing any segmentation or jaws. The "gap" at the apex (closer to the center of the concretion) seems like some kind of a structure and at the base of it there seem to be some grains concentrated in a circle (see microscope pics). My working hypothesis is a barnacle, Illilepas damrowi, with the "gap" being a slit between the valves? Sorry for the lack of scale, still in search of my ruler. The fossil itself is about 2.5 cm long. Close-up of the slit. 2. I have absolutely no idea what this could be, but the shape seems defined enough to potentially be recognizable. Is this a plant bit? A segment from some arthropod? The fossil itself is only 5 mm. My first thought was a trilobite hypostome, but those obviously cannot be found in Mazon Creek deposits.
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From the album: Pennsylvanian fossils
Phylum: Chordata Class: Chondrichthyes Order: Cochliodontiformes Family: Cochliodontidae Genus: Deltodus-
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- deltodus
- pennsylvanian
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I found what I think is a very small and mostly complete (distal edge view) cladodont tooth. It appears to be missing some root and also has a crack running right through it, so I glued around the stone to keep it stable enough until I get home to clean it up in a few weeks. Any thoughts? It looks like one to me, but I've been wrong plenty of times before.
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Found a few impressions similar to this one during a hike near Davis, WV. Geology is Pennsylvanian sandstone. Could this be Calamites or am I way off? Rock in photo is ~ 5"x4" in size Thanks!
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Hi guys! Helping my grandpa clear out his collection, we stumbled across this. It's apparently from the Breathitt Formation somewhere in Kentucky, and we have no idea what it is. Is it some sort of root cast? We found some horsetail and scale tree stuff from there online, but no comparisons to this.
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From the album: Pennsylvanian fossils
Phylum: Chordata Class: Chondrichthyes Order: Petalodontiformes Family: Pristodontidae Genus: Peripristis sp.-
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- deer creek limestone
- pennsylvanian
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Today I split out a tooth that I am unfamiliar with. At first glance, I had thought it was a Deltodus tooth, but during closer inspection I am questioning that. Unfortunately as I went to put the tooth back in the matrix, the tooth split in half. I did some glueing, and I think it can still be identified as not a lot was lost. The tooth measures right at .75 inches in length. I also found this little oddball. Not a tooth, but I sure can't think of what this is. I considered it to be part of a trilobite or bryozoan, but I don't think that is right. Any thoughts?
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- deer creek formation
- ozawkie ls
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From the album: Pennsylvanian fossils
Phylum: Mollusca Class: Cephalopoda Order: Nautilida Family: Tainoceratidae Genus: Metacoceras?-
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- cephalopod
- deer creek formation
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Today I found a few trilobites after being granted permission by a landowner to check his property for fossils. I think these have features that match much better with Ditomopyge rather than Ameura, but I am not 100% certain and would like other opinions please. Specimen #1 Specimen #2
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- deer creek formation
- ozawkie ls
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I found this odder little brachiopod on my last outing a few days back. I didn't examine it until I got home later that day, and realized then it wasn't one of the more dominant species in the formation. It has qualities that match well with Phricodothyris. It would be a nice new species to my collection, but I am not completely certain. What do you think?
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- brachiopod
- deer creek limestone
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I have no idea what this thing is. I found it in Allegheny County today in the Pennsylvanian Glenshaw Formation in what I think is Brush Creek Limestone. Unfortunately it is only part of the fossil, but I thought the pattern might tip someone off as to what it is. Scale is in metric. Thanks for the help.
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- allegheny county
- brush creek limestone
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I found this piece on Friday. I thought it was wood, hammered it out, collected it in a tiny bin, and took it home. Saturday evening I put it under the scope and was surprised to see the texture. I've collected wood before and the grains are typically tighter. It also looks very similar to recovered Petalodus or fish root material I've seen. This deposit has a lot of different shark teeth, at least four unique genera are present. The limestone has the characteristics of a dynamic wash, where a lot of material was gathered and deposited quickly. Not that it helps a lot. I've never found shark bone or cartilage, so I don't know exactly what to look for. Scale bar = 5 mm.
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To really start the summer off well, I went recently to a Bond Formation rock formation of Pennsylvanian age, around 300 Million Years ago, in Oglesby Illinois with a few friends. The trip was overall good, though I almost fell off the rocks a couple times. It was a bit hot but overall I think I got a decent amount of fossils for the day. I found a decent amount of Crinoid stem fossils, of which here are a few of them: Found lots of what I think are Chondricthyian teeth (Chomatodus, Gilkmanius, etc.). But I would like help identifying them!!! Unknown Specimen 1
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- bond formation
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From the album: Pennsylvanian fossils
Phylum: Brachiopoda-Articulata Class: Rhynchonellata Order: Orthida Family: Enteletidae Genus: Enteletes- 4 comments
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- brachiopod
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From the album: Pennsylvanian fossils
Phylum: Echinodermata Class: Crinoidea Unknown crinoid stalk with cirri attachment nodes -
Composita brachiopod with calcite brachidium
Collector9658 posted a gallery image in Member Collections
From the album: Pennsylvanian fossils
Phylum: Brachiopoda-Articulata Class: Rhynchonellata Order: Athyridida Family: Athyrididae Genus: Composita Species: Composita subtilita- 2 comments
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- brachidium
- composita subtilita
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I am seeking info on Pennsylvania’s Carboniferous plant fauna. The ID plates I currently have access to are ok, but lack info beyond ferns. I have been digging a coal hillside in the Llewelyn Formation, and exposed some cool pine cone and seed pod like material (attached), and I’d like to learn species name and background information. 1.Pine cone sides 2. Cone up close 3 Seed Pod
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Hey everyone! Haven't posted here in a while, and thought I would come back with a trip report. Recently I became interested in Mazon Creek fossils - something unusual for me as a vertebrate person. I finally managed to get out in the field this spring and visit the Mazonia-Braidwood State Park and the Braceville spoil pile through an ESCONI trip. I have collected at quite a few Paleozoic sites before, but this was my first time hunting in the Carboniferous! I went to Mazonia with a friend on a weekend in early April, when there was no foliage and it was sunny outside. I read a lot of threads about Mazon Creek on this forum and we decided to go straight through the bushes to search for the most inaccessible areas we could find. Here are a few concretions. Sadly, both of these turned out to be empty Also found a first Pennsylvanian garter snake Here is our total haul for ~4 hours. The only non-Essexella thing we found already open was this coprolite (?). By the way - if you see any errors with identification in this thread please correct me, I'm still learning a lot about this awesome deposit. Then came the freeze-thaw. I decided to cheat a little and use the -80C freezer in the lab I work in, which shortens the freezing part of the cycle to a few hours. At this point, most of the concretions from this trip have already opened: My nicest and largest Essexella ascherae. Another Essexella (after vinegar). When it opened, I first thought it was some arthropod segment, but I like it anyways. This one is weird. Coprolite? Probably nothing (?), but the pyrite is pretty. A plant of some kind, probably not identifiable. And my favorite find: I believe this is the apex of a Calamites sp. - segments are clearly visible. This concretion didn't want to open for over a month, so I got frustrated and dropped it from the 4th floor of my building as I didn't have a hammer with me... Don't do that.
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- lagerstatte
- mazon creek
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From the album: Pennsylvanian fossils
Phylum: Mollusca Class: Cephalopoda Order: Orthocerida Family: Pseudorthoceratidae Genus: Mooreoceras- 1 comment
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- cephalopod
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I'm in the process of photographing and cataloging specimens from a new site and thought some here might enjoy seeing some specimens as I go. These fossils were collected in eastern Illinois from the roof shales of the Herrin (No. 6) Coal. They are middle Pennsylvanian (Desmoinesian) in age. The Herrin (No. 6) Coal is the second to last coal member of the Carbondale Formation. For reference, the Mazon Creek biota occurs in the Francis Creek Shale Member, which overlies the first coal member of the Carbondale Formation, the Colchester (No. 2) Coal. Here's a general stratigraphic section of the Carbondale for reference. This biota has similarities to the Mazon Creek biota, but the flora especially is quite different. The fauna so far seems typical of terrestrial Pennsylvanian sites: bivalves, branchiopods, indeterminate arthropod parts, and a single shark egg. This biota is not well studied, and thus many names here are provisional pending a possible formal study. Scale bars are 1cm unless noted otherwise. Dunbarella striata Calamostachys tuberculata Alethopteris gibsonii Cyperites bicarinatus
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- carboniferous
- fauna
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I found this fossil imprint while looking for arrowheads out in a farm field today in Parke County, Indiana (west central indiana). I’ve found a number of fossils from the area in my life but have never seen one like this. Anyone have an idea? The imprint does not continue around the other side of the rock. What you see in the image is all that’s there.
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Stumbled upon a cool looking partial tooth. I'm not the best with IDing teeth, but I think this might be a Cladodont tooth? It has side cusplets. The tooth root measures 1 inch across.
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- deer creek formation
- ervine creek member
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Please help ID these Pennsylvanian Naco Formation trace fossils from central Arizona. Help Chris. @Arizona Chris Are the 1 cm wide chevron tracts in photo 3 Cruziana from trilobites? What are the 2.5 - 3 cm long teardrop shaped features in photos 1 and 2? What are the 2.5 - 3 cm long teardrop shaped features in photos 1 and 2? What are the elongated traces 3.5 to 4.5 cm long with length parallel marks in photo 4? From crustaceans?
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I have no idea what this is. It's unlike anything I have found. I split it out of Brush Creek Limestone today. Pennsylvanian Period, Glenshaw Formation. It's about 25 cm in circumference at the base. I would guess cephalopod, but it's much bigger than one's I've previously found. Help is appreciated, thanks!
