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  1. Vlad Lujak

    unknown blobs from Santa Fe

    Hey everyone, scrabbling around Santa Fe and found a nice spot with tons of shells and some crinoid stem parts, when I came across a round piece I thought at first a vertebra. The next time I went out with a friend she found some points and we found more smaller pieces and thought some kind of snail, but not an obvious twist. now I'm leaning toward a mineral formation? Any help would be awesome. Last picture is a shell to give an idea of the surroundings...
  2. Hi all, Recently going through some of my Stark Shale material and prepping some of it and this little specimen has me wondering if it’s a tooth. It’s probably pareidolia but the lip at the bottom appears to have a sort of smoothness to it unlike the two protrusions. I'm not sure if the honeycombed structure is bone or cartilage but I’m trying to decide if I should prep it any further and any ideas or thoughts would be appreciated. @Petalodus12 @connorp 1. 2. 3. Thanks!
  3. 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 i
  4. historianmichael

    More Pennsylvanian Plants of PA

    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 firs
  5. I had the opportunity to collect plant fossils in Western Pennsylvania a few weeks ago. Success was had IDing the fern leaves. But I am having difficulty identifying the woody pieces found that are not Calamites. These came from the Glenshaw Formation, Mahoning Shale which is Pennsylvanian. I realize that a decaying swamp is full of twigs that likely are unidentifiable, but there seems to be structure in at least some of these which could lead to some sort of identification. I am hoping those knowledgeable with the Pennsylvanian flora can chime in. 1. Here are some larger pieces
  6. Jeffrey P

    Partial fern frond from PA.

    From the album: Carboniferous from PA.

    Laveineopteris rarinervis Gymnosperm Frond Upper Pennsylvanian Llewellyn Formation Locustdale, PA A gift from historianmichael. Thanks Mike.
  7. Missourian

    Backyard Trip

    My folks have a nice lake behind their house. It is relaxing to spend a warm evening watching a heron spear fish or geese fight each other. Or watch silt slowly fill the lake bed. Across the street, a housing developer stripped off a bunch of soil down to the bedrock, but ran out of money before building on the land. This has resulted in some significant erosion and sedimentation in the lake, but this cloud does have a silver lining. I soon noticed a thick bed of shale exposed on the hill. So it was only a matter of time until I make the short trip to the top. The hill,
  8. historianmichael

    Pennsylvanian Plant ID Help

    On Saturday I took a trip to collect some Late Pennsylvanian plant material from the Llewellyn Formation of Pennsylvania. I am still working through my finds and identifying everything, but as an initial matter I had a question about two pieces. I have a guess on what they can be and was hoping someone might be able to confirm my suspicions. Any help is greatly appreciated. Thank you! First, I believe that this fossil preserves the cell structure of a Calamites stem Second, are these the terminal shoots of Asterophyllites? Unfortunately some of it broke in transport b
  9. I am going to start adding some images of my favorite finds which I call Collection Pieces. Identifications range from maybe, probably to most likely. I've only started to seriously collect over the past year. I've spent a great deal of time studying and learning Geology, as a hobby. I am located in Western Pennsylvania. At first, a map of the area. Anything in bright yellow is the Glenshaw Formation. The Ames Limestone layer exists between the Glenshaw and the Casselman Formations, which is the Orange color on the map. I have yet to explore the Ames Limestone, so I've only found f
  10. Blair County Pennsylvania (USA) (Private property) ..... Recently I explored some heaps of old mine talus which I think is the whitish sandstone from the Pottsville Formation. These rocks commonly have imprints in various degree of detail, especially cordaites and lycopods. The pics below show one large boulder with what I think is a very large imprint of sigillaria. The tape shows 8 feet. I'll readily admit that I'm a noob and susceptible to seeing what I want to see. From my pics someone who knows 'way more than I will ever learn opined the "ridges" ar
  11. From the Atrasado Formation in San Diego Canyon, New Mexico. Took a couple of younger friends fossil hunting, and we found a good bed. This one's a real beauty. My photographic equipment is primitive and doesn't do it justice. Graptolites and something else. Not sure what the circular structures are; I don't have the equipment for proper microphotography. There is a very clear echinoderm plate elsewhere in the sample so I'm wondering if these are some kind of echinoderm. They're very clear under the loupe and obviously f
  12. kgbudge

    Coral fossil?

    Coral fossils? From a recent trip to the Payson area, Arizona. Possibly Naco Formation.
  13. connorp

    Tiny Pennsylvanian Ammonoids

    Over the past year I've I found two tiny ammonoids from a site in the Carbondale Formation (Middle Pennsylvanian) of Illinois. Both measure approximately 5mm in diameter. The first specimen below showed no details of the exterior of the shell, which I believe are necessary in identifying these. This week I found a second specimen (maybe a different species) which does show the suture pattern. I'm hoping that this specimen is identifiable. Part Counterpart Does anyone recognize the species? Thanks!
  14. I found this broken nodule in an outcrop of Pennsylvanian shale in Northeast Oklahoma. I’m wondering if the fossil could be the upper part of a skull? Other common fossils from this site include fragmentary fish remains (e.g., teeth, spines, dermal denticles, and coprolites from sharks and other fishes), as well as invertebrate remains from ammonites, gastropods, bivalves, brachiopods, corals, and conularia. If this is a skull, would you guess it to be from a fish, amphibian, or reptile? I don’t see any traces of teeth in the nodule, but I can provide closer views of areas that might be o
  15. Hey everyone! I was planning on passing through Brownwood, Texas, which I know is definitely full of fossils if you know where to look. However, never having been there before, I do not know the best publicly available sites to hit. Would anyone happen to have any they could suggest? Thanks so much!
  16. So.....I was splitting my last piece of Pennsylvanian stark shale member, between Winterset and Bethany Falls limestone from a 2x2' 2" thick piece, I found some cool conodonts, a lot of scolecodonts, and amassing a pile of split shale, when I came upon yet another listracanthus/fish spine, about 5-6cm in length and very slender (2-3mm in width). I have both positive and negative pieces (depicted here). I scan all of these to see the pattern, faint impressions of a wider segment (as seen in photo 6 ), and in this particular specimen noted the shiny black cracks and creases surrounding the fossi
  17. JamieLynn

    Texas Pennsylvanian - Crinoid?

    I found this little critter in some Pennsylvanian micro matrix I brought home. I am guessing it's an odd crinoid but it is also not like any I've come across. Any info will be appreciated! Size 1/4 inch
  18. Last year @jdp was kind enough to identify the tiny and jumbled skeleton I found in a concretion in eastern Illinois http://www.thefossilforum.com/index.php?/topic/107472-mysterious-jumble-inside-pennsylvanian-concretion/ as a lysorophian tetrapod and direct me to the Field Museum in Chicago as a possible repository for it. This month I finally completed the donation and it has been added to their collection, a fantastic event for someone who has been visiting the museum for more than 30 years to gaze in wonder at their world-class collection. Thank you again to @jdp and The Fossil Forum for m
  19. cngodles

    Pennsylvanian Ammonoid

    I found this a while back, but finally saw it as an Ammonoid. But which one I wonder. It is pretty thin. Unseen is the inner umbilical groove, but it’s likely not important for ID. Opposite side is unremarkable.
  20. Paleontologic Data Fossilized on IBM 8” Floppies Posted April 13, 2020 by Ben Muddiman, Ivo Duijnstee and Cindy Looy University of Chicago Museum of Paleontology Yours, Paul
  21. Hopefully I'm not breaking any rules here posting a link. I spent my weekend finally putting my catalog into a proper database, and creating a user interface for it. I used to use Google Sheets, which is pretty great. If I wanted to, I could use them as the source of data, but I decided to create a proper MYSQL database so I can keep relationships across tables, such as the stratigraphy of particular find locations. I have many more improvements coming for it, but it is at least functional right now. Everything from CG-0001 to CG-0161 is from the Glenshaw Formation, Conemaugh Group
  22. I found two of these little critters at Lake Jacksboro. I thought they were nautiloids based on the little round "hole" but upon photographing them, I can clearly see striations runing the length of the shell, more like a gastropod Euphemites, but the shape is not consistent with Euphemites but more nautiloid. Any help would be appreciated! Scale is in inches. First one: second one : Gastropod Euphemites for comparison:
  23. historianmichael

    Sphenophyllum emarginatum

    From the album: Llewellyn Formation Plants of Pennsylvania

    Sphenophyllum emarginatum Late Pennsylvanian Llewellyn Formation Schuylkill Co., PA
  24. DPS Ammonite

    Crania Brachiopod

    Crania Crania modesta is a rare calcium carbonate Pennsylvanian inarticulate brachiopod. The shell is very thin and the ornamentation of the shell below shows through. You can see the interior of a near circular 4.6 by 4.8 mm pedicle valve that attached itself to aLinoproductus prattenianus (photo #1). A bryozoan also covers the front and back of the Linoproductus (photos #2 & #4). Photo #2 is a different photo of the same Crania as in photo #1. The Crania has a thickened rim and a sub central knob. Rowell (1965, p. 289) lists Crania as the only Pennsylvanian genus with a calci
  25. Over the past year, I've become fascinated with the often bizarre fish and sharks of the Pennsylvanian. Fortunately, my home state of Illinois is a great place to hunt for such fossils. I've shared several of these in other posts before, but wanted to put everything together in one thread. Probably won't have much to post for a few months after this, but once summer rolls around, I should hopefully have plenty of new finds to share. I would say there are three major settings in which you can find fish fossils in Illinois: Mazon Creek, black shales, and limestone. I have not had luc
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