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Showing results for tags 'Pennsylvanian'.
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I’ve been air scribing this piece out and I figured it was a Mooreoceras. However, the ridge going up the front is something I haven’t seen on this species. Is it just squashed a bit? It’s a pointed oval in shape. The length is nearly 3 inches.
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Carboniferous Pennsylvanian seed fern specimens (pteridosperms)
ntloux posted a topic in Member Collections
I am attaching images of Pennsylvanian seed ferns that were identified by the collectors. The fossils from Kentucky were generally found in the shale around closed down coal mines on family farms. Hopefully these images may assist others in identifying their specimens. Comments/suggestions/corrections are welcome and I also would appreciate specimen identification beyond the genus level for many of the specimens. The first image is of a Pennsylvanian alethopteris specimen from eastern Kentucky: Pennsylvanian alethopteris from eastern Kentucky. Pennsylvanian cyclopteris (upper right) and macroneuropteris specimens from eastern Kentucky. Pennsylvanian eusphenopteris specimen from eastern Kentucky. Pennsylvanian mariopteris specimen from eastern Kentucky. Pennsylvanian Pecopteris plumosa specimen from Upper Silesia in Poland. Pennsylvanian pecopteris specimen from eastern Kentucky. Pennsylvanian sphenopteris specimen from eastern Kentucky. Pennsylvanian crenulopteris specimen from Mazon Creek, Illinois. A helpful Forum member suggested this could be crenulopteris acadica. This last Pennsylvanian specimen is from Mazon Creek, Illinois identified by one individual as Lobatopteris lamuriana and in addition a helpful Forum member suggested that it is possibly a diplazites unita.
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- 3
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- alethopteris
- carboniferous
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I have found that illuminating photos of cordaites fossils are relatively hard to come by. Hopefully these images will help to rectify the situation. Photos 1 and 2 are of a Cordaites borassifolus Sternberg fossil from the middle Pennsylvanian in Upper Silesia, Poland. I suspect that it is of the trunk and the nice, very fine striations are clearly evident in the close up (Photo2). Photos 3and 4 are of cordaites leaf specimens from the Mazon Creek area that was identified by both helpful Forum members and me. The close up of the Mazon Creek specimen (photo 4) clearly agrees with the literature in that they are strap like leaves, they do not have a prominent central vein and they do have equal, equally spaced veins. The Mazon Creek leaves also appear to be on a branch and sigillarius leaves apparently do not. Photos 5 and 6 are of a fossil from SW Pennsylvania that I have identified as a cordaites fossil. As with the Mazon Creek specimen, it is strap like, it has no prominent central vein and the veins are equal and equally spaced. The quality of the close up in Photo 6 is not the best and you might have better luck enlarging Photo 5.
- 7 replies
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- 5
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- borassifolius sternberg
- cordaites
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I have 4 Pennsylvanian stigmaria specimens of which only one was specifically identified as a lepidodendron by the collector. I am hopeful that others might have useful suggestions in terms of better identifying the others. The 1st image is of a Pennsylvanian lepidodendron stigmaria specimen from Kentucky. This is my nicest one because not only is it better identified, it also illustrates rootlets and buttons. Image 2 is of another Pennsylvanian stigmaria from Clintonville, Pennsylvania. This appears to be the most common type of stigmaria that I have seen. Would anyone have suggestion/possibilities that would better characterize this specimen? Images 3 and 4 are a Pennsylvanian stigmaria with a heavily degraded label. Image 4 is a closeup of the specimen in image 3. I was able to decipher parts of the label and it was apparently collected near Middlesboro, Kentucky. The rootlet scars on this specimen are much less three dimensional that the rootlet scars on the specimen in image 2. There may be a comment on the label about the rootlet scars having a spiral character. Would anyone be better able to characterize this specimen? Image 5 is of another Pennsylvanian stigmaria from Kentucky. It has many similarities with the specimen depicted in image 2. I also have one very heavily weathered stigmaria from Oklahoma that is very similar to the ones depicted in images 2 and 5; I didn't think it was worth uploading an image. Comments and suggestions about the others would be appreciated.
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- 2
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- carboniferous
- lepidodendron
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Hello, I found what looks like a worm on a block of limestone too large for me to split. So I took a picture of it. It is about 4 cm. The limestone is Carboniferous, Pennsylvanian and from the Glenshaw Formation. Thanks for the help!
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I am attaching images of calamite and annularius specimens in my collection. Because their appears to be some debate among the experts on the relationships between calamites and sphenophyllum and asterophylloides, I am also including images of these specimens. I would welcome comments, suggestions or corrections from viewers. Further species identification would also be appreciated. Image 1 is of a Mesocalamite specimen that was among other Pennsylvanian fossils from Kentucky. Image 2 is of another Pennsylvanian Calamites from Kentucky. Image 3 is of a Pennsylvanian Calamites specimen from Alabama. Images 4 and 5 are Pennsylvanian Annularia leaf specimens from Mazon Creek IL. Image 6 is a Pennsylvanian Annularia radiata specimen from the Westwalian A & B, Lower Silesian in Poland. The contrast between the fossil and the underlying rock is so poor that I did alter the exposure settings in order to better view the fossil. Image 7 is of a Pennsylvanian Sphenophyllum specimen from Mazon Creek IL. Image 8 is of a Pennsylvanian Sphenophyllum cuneifolium specimen from the Westwalian A & B, Baszkirian, Lower Silesian in Poland. Again, because the contrast was so poor, I altered the exposure in an effort to obtain a better picture. Image 9 is of a Pennsylvanian Asterophylloides specimen from eastern Kentucky.
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- 4
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- annularius
- asterophylloides
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I have 2 Pennsylvanian fossils from Mazon Creek. They have previously been identified as crenulopteris and lobatopteris lamuriana. Presumably the crenulopteris specimen is a seed fern; however, I am unsure about the lobatopteris lamuriana specimen. Presumably the lobatopteris was once labeled as a pecopteris so is it still considered to be a seed fern? Any information or suggestions would be greatly appreciated. The first image is of the lobatopteris specimen, The next image is of the crenulopteris specimen.
- 4 replies
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- 1
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- carboniferous
- crenulopteris
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From the album: Texas Pennsylvanian: Gastropods and Corals
- 1 comment
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- 2
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- gastropod
- glabrocingulum
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From the album: Texas Pennsylvanian: Gastropods and Corals
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- 2
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- gastropod
- pennsylvanian
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From the album: Texas Pennsylvanian: Gastropods and Corals
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- 2
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- gastropod
- pennsylvanian
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From the album: Texas Pennsylvanian: Gastropods and Corals
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- gastropod
- pennsylvanian
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From the album: Texas Pennsylvanian: Gastropods and Corals
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- gastropod
- pennsylvanian
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From the album: Texas Pennsylvanian: Gastropods and Corals
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- gastropod
- pennsylvanian
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From the album: Texas Pennsylvanian: Gastropods and Corals
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- euconospira
- euconospira turbiniforms
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From the album: Texas Pennsylvanian: Gastropods and Corals
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- gastropod
- glabrocingulum
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From the album: Texas Pennsylvanian: Gastropods and Corals
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- gastropod
- glabrocingulum
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From the album: Texas Pennsylvanian: Gastropods and Corals
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- gastropod
- glabrocingulum
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From the album: Texas Pennsylvanian: Gastropods and Corals
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- gastropod
- pennsylvanian
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From the album: Texas Pennsylvanian: Gastropods and Corals
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- 2
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- gastropod
- pennsylvanian
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From the album: Texas Pennsylvanian: Gastropods and Corals
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- gastropod
- pennsylvanian
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Hello all - I hope my fellow hunters were able to avoid the tics and enjoy the unseasonably warm weather and enjoy a great opening weekend! We came away with one FULL 5 gallon bucket of mostly unopened concretions - with a possible Tully and some nice plant material among the open concretions. Would anyone care to take a stab at this one that came out of pit 11? Thanks! Patrick
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- cone
- mazon creek
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I have some fossil grass-like leaves from a specimen that was associated with other Pennsylvanian fossils collected from near Middlesboro, Kentucky. The specimen is somewhat problematic for display purposes because it has a very nice mesocalamite fossil on the opposite side. The 1st and 2nd images are of the leaflike fossils with a closeup. The white spots are apparently where reactive iron sulfides have been exposed to atmospheric humidity and were oxidized to some type of iron sulfate. The grasslike leaves do not appear to have a strong central vein which might suggest that these are cordaites leaves. The 3rd image is of the very nice mesocalamite fossil on the opposite side. Suggestions would be greatly appreciated.
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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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- 19
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- carboniferous
- fauna
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From the album: Texas Pennsylvanian: Echinoderms (Crinoids and Echinoids)
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Echinoid Pronechinus Plate Pennsylvanian Texas
JamieLynn posted a gallery image in Member Collections
From the album: Texas Pennsylvanian: Echinoderms (Crinoids and Echinoids)
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