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I was inspired by @Mark Kmiecik and his quality photographs to finally learn some basic image editing. I had this beautiful Crenulopteris acadica fern open yesterday and figured it would be a good specimen to make a first attempt. Let me know your thoughts.
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This weekend I was able to spend a couple hours breaking rock at one of my favorite Pennsylvanian sites. This site exposes the lowest units of the Carbondale Formation, from the top down: Mecca Quarry Shale (MQS), Francis Creek Shale, Colchester No. 2 Coal, paleosol. At various times both the St. Peter Sandstone and Platteville Group (both Ordovician) have been exposed at the bottom of the pits (they were not visible this trip), representing a major unconformity in the area. The concretions from the Francis Creek Shale (i.e. Mazon Creek fossils) are not productive here - my area of focus was instead the MQS. As far as I can tell, the MQS is no longer exposed here. But at the base of the MQS in some locations are large limestone concretions which is what we find here. The limestone is very hard and when freshly exposed does not split easily, so collecting is best limited to limestone which has been weathering for some time. The most abundant fossils in the MQS here are bivalves, but occasionally brachiopods, cephalopods, gastropods, plant material, and fish bits show up. Here are some of my favorite finds. A partial Listracanthus hystrix shark denticle Dunbarella sp. Fish regurgitant (mainly palaeoniscoid bits) Desmoinesia muricatina with an attached spine Pyritized Dunbarella sp. Pseudorthoceras knoxense with several encrusting serpulid worm tubes Just one of many tiny isolated fish bones found Palaeoniscoid scale The base of a Petrodus shark denticle Possibly a bit of cartilage? This is perhaps my most interesting find, although I am not positive on the ID. I believe the spine is a fin spine from an acanthodian, and thus would assume the scales are acanthodian scales? Any thoughts are appreciated. @jdp
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I found this fossil last year in the Mecca Quarry Shale (Pennsylvanian) of Illinois. I posted it previously but no definitive answer. I got a new digital microscope recently and decided to snap a few photos of this specimen up close. Hopefully they might help, though I still have no idea what it is. Thoughts?
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Greeting folks! I have had these treasures for quite some time - actually I had forgot that I had them. Other than knowing these are really unique and quite special, I have no idea what these "really" are. Hopefully everyone enjoys these photos. Thanks everyone! Dan
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Reconstruction: References: Bardack, D. & Richardson, E. S.(1977) New agnathous fishes from the Pennsylvanian of Illinois. Fieldiana, Vol. 33, No. 26, publication 1261, pp. 489-510
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From the album: Sharks and fish
The shark relative is genus of eugenodontia holocephalid from the Carboniferous-Pennsylvanian age Anna shale formation, Carbondale group, found in different Illinois coal mines. I dont know(yet)which mine these were found in. This unidentified species is of the "vorax-serratus- crenulatus-heinrichi" or "E. heinrichi group", with the teeth being more of a standard triangular shape, as opposed to being thinner and pointed at a forward angle as in the "E. minor" group http://www.thefossilforum.com/applications/core/interface/file/attachment.php?id=501751 -
I took to trip to the Poconos this weekend and stopped by Carbondale for a hunt (thanks Jeffrey P for the info on it)! I think I did well and had a really fun trip. It was a little tricky to get there but definitely worth it! I found several fossils ferns and other plants as well as fossil bark - I'm not 100% done going though them yet, but these are my favorites of the trip. On the last two, I would appreciate any info. on what they may be. Thanks! ..
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Here's some Carbondale (llewellyn formation) finds, any ideas? note: sorry about the oblique angles on some, it's hard to see striations on some without it. Obverse of last one
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Here's another fossil from Carbondale, shaped like a check, or an L or a 7. Two in fact, I split the rock and it's inside it as well, so its thick. Any ideas?
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Hello everyone, this is another Carbondale find. Tell me what you think, more pictures from different angles can be taken.
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Here's the first of my finds from Carbondale. It's a plant of some sort, Pennsylvanian. I have a few, these have positive and negatives, some seem to have a few sprouting from one center. I'm new to this time period, so I'm letting you guys ID this for me. Ones a little broke after the ride back, I guess I'll use some super glue.
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First of all, thanks to @GordonC for alerting me of the Carbondale sites existence, and secondly Jeff at this site for giving me directions, as well as further information. Okay, so being in the area, about 45 minutes away in lake Wallenpaupack, I decided to take a trip to Carbondale. This trip turned out fantastic, at least I think it did (I've never hunted in Carboniferous stuff, so I may be over excited over what I've found). The information online is sparing, so I'm gonna give a rundown on it here so others can hunt. First you drive to this location . Go between the third and fourth apartment buildings on the right. You will see gravel. Walk behind the dumpster to the brush, about here. Then turn left and walk on the cleared path there. All websites say it's a road, but it's a little to think of driving on. Walk to the end on the path to a clearing, and you will see piles of sediment from the mine. This is what I searched in, it's very fossiliferous. It seems there is a larger hill a little further that's completely made of trainings, but I couldn't find a way to get to it. The actual site I hunted at is here. Go at your own risk, as the place is sketchy, I had one encounter with the local law enforcement. He had no idea of the fossils. The site is Llewellyn formation, late middle to late Pennsylvanian ( which is late Carboniferous). I found lots of logs and calamites and branches and things I have never seen before. Some I'm particularly proud of, and they have put everything else I have collected to shame. I may try for FOTM, but I doubt I'll win, competition just keeps getting tougher and tougher! Y'all will be seeing lots of Carboniferous ID requests from me soon. Here's some pictures of how to get to the site. I didn't take as many as I would have liked because I was excited to find things, to my despair I forgot my bucket, so I was stuck carrying heavy things back to the car. Well, hope this helps people! Happy hunting! Here's one of the piles A smaller one of course
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Kathleen B. Pigg of the University of Arizona notes that this "stem subsurface pattern that is sometimes called 'rabbit tracks'. The double track you see is probably a result of a pair of air channels that accompany the leaf trace through the cortex. The vertical ribs are produced by an increase of bark through secondary tissue production." The pair of sepicemns in the first image are the positive and negative impressions of the same piece. The second image is a detail from the same specimen.
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From the album: Carbondale, PA
Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo-
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From the album: Carbondale, PA
Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo-
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From the album: Carbondale, PA
Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo-
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From the album: Carbondale, PA
Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo-
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From the album: Carbondale, PA
Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo-
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From the album: Carbondale, PA
Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo-
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From the album: Carbondale, PA
Finely parallel-veined leaves of a Cordaites plant alongside the branch or root of a giant Lycopod (aka scale tree or club moss). The latter could grow up to 50 m high! found in Carbondale, PA Lewellyn Formation Pennsylvanian (Upper Carboniferous) period 299-323 myo-
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From the album: Carbondale, PA
Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo-
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From the album: Carbondale, PA
Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo-
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From the album: Carbondale, PA
Calamities sp., a tree-like plant with hollow, woody stem that grew more than 100 ft high (30m). Carbondale, PA. Lewellyn Formation Pennsylvanian period 299-323 myo-
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From the album: Carbondale, PA
Pyrite (?) layer over shale Carbondale, PA Lewellyn Formation Pennsylvanian 299-323 myo-
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From the album: Carbondale, PA
Calamities sp., a bamboo-like plant closely related to modern horsetails with hollow, woody stem that grew more than 100 ft high (30m). Carbondale, PA Lewellyn Formation Pennsylvanian period 299-323 myo-
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