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Found 22 results

  1. Mikrogeophagus

    Apographiocrinus sp., Finis Shale, Graham Fm

    From the album: Virgilian Series

    Apographiocrinus sp., Jacksboro Finis Shale, Graham Fm Feb, 2023
  2. From the album: Virgilian Series

    Streblochondria aff. stantonensis, Jacksboro Finis Shale, Graham Fm Feb, 2023
  3. From the album: Virgilian Series

    aff. Agassizodus corrugatus, Jacksboro Finis Shale, Graham Fm Feb, 2023
  4. This came from a bucket of material from Jacksboro Texas donated by @GaryTurner for the Dallas Paleontological Society fund-raising auction, so it's Late Pennsylvanian, Graham Formation. The surface resembles a bryozoan but I haven't seen one with this shape. Scale is millimeters.
  5. Mikrogeophagus

    Fimbrinia plummeri, Finis Shale, Graham Fm

    From the album: Virgilian Series

    Fimbrinia plummeri, Jacksboro Finis Shale, Graham Fm Jan, 2023
  6. From the album: Virgilian Series

    Paraconularia crustula, Jacksboro Finis Shale, Graham Fm Feb, 2023 Jacksboro is one of the few sites where Conulariids are a common find. These enigmatic fossils are thought to belong to Cnidaria. Conulariids are actually known to produce pearls, though I'm not sure if these have been discovered specifically at Jacksboro.
  7. From the album: Virgilian Series

    Rhynchopora magnicosta, Jacksboro Finis Shale, Graham Fm Feb, 2023 A rare find for Jacksboro!
  8. I found this cephalopod at the Lost Creek spillway site neat Jacksboro Texas. It's from the Finis Shale, Graham Formation, Upper Pennsylvanian. The largest dimension is 16 mm. It seems to be a replacement fossil so no sutures are showing and I don't know of any similar goniatites so that suggests a coiling nautiloid. The only thing I know of with a trapezoidal whorl cross-section like this is a Titanooceras and T. ponderosum has been found there but of course they are huge so it would have to be close to the protoconch. There is an off-center ridge going along the venter and the shell thickens greatly at the ventrolateral margins. I can check for any other features that might help with an ID. edit: It occurred to me that this may not be a cephalopod at all but a gastropod, Amphiscapha subrugosa but I haven't seen one with the ventral ridge. Ventral view Dorsal View
  9. The Pennsylvanian of Texas is a strange and exciting place. Even though I've been going at this whole fossil hunting thing for about a year and a half, my experience in this age of rock is extremely limited. And yet, many of my most prized specimens have come from such hunts. I've had the pleasure of visiting a few of the more prominent Pennsylvanian sites to be had around Central Texas, but now that I'm back up North, I thought it would be prime time to check out a spot that many have put in good words about. Another local collector, @PaleoPastels, had also been dipping her toes in the Paleozoic, so we decided to go for a group outing along with her entomologist roommate to the famous Lost Creek Reservoir in Jacksboro and a couple of Bridgeport localities! Unfortunately, @BobWill couldn't make it for that day, but he was nevertheless very helpful with providing guidance and advice on hunting the Finis Shale. Nothing beats first laying eyes on a distant exposure. The walk felt like an eternity! The day started off early and, after a bit of confusion , we managed to make it by about 9 am. The air had yet to be warmed by the sun, so we were all feeling a little chilly as we walked to the bluffs, simultaneously exchanging gifts and introducing ourselves. I was relieved to find that Lari was just as nice as her online personality made her out to be and we got straight to chatting about, well, fossils. Cole wasn't as big on fossils as Lari, but he still showed good enthusiasm. We weren't expecting trilos here, but I was crossing my fingers that we'd get some in Bridgeport to fulfill his entomology interests. Looking to the left and to the right on the Jacksboro slopes Once we reached the grey base of the bluffs on the far right end, we were all immediately hunched over, gathering up bits and pieces of the wide diversity of fauna present at the site. The ground was literally covered in millions of brachiopods, cephalopods, and gastropods. Some of my favorite things to pick up were snails of the order Bellerophontidae. They've got such a unique look to them that drastically differs from the gastropods of the Mesozoic and Cenozoic. A Pharkidonotus percarinatus gastropod still in matrix We steadily made our way to the left, scuttling up and down the slopes over and over again. The initial excitement had waned and the pace of finds slowed; Now we were really trying to focus on getting some of the rarer/cooler stuff. Throughout the morning, I had been yapping away about conularids: How strange they are, how I was really hoping to find one, how this was the one place where they were almost common, etc. I thought we'd have found one a lot sooner, but the lack of results and recent rain got me a little nervous, I must admit. I was starting to regret talking about them so much, especially when Lari and Cole began getting more interested in them. Surely this place was so big, it couldn't run out of them, right? A recreation of how I found the first conularid of the day Well, I guess the place is big enough because the first conularid of the day was at my feet before I knew it. It's beat up, but the enigma surrounding this animal is enough put it on the top shelf. Throughout the day, I found a handful more. I offered some to Lari, but she would not be satisfied until she found one on her own, which I understand. To find out if she and Cole scored any, you'll have to wait for her side of the story . Fimbrinia plummeri Not so far from the first conularid, I picked up my favorite brachiopod of the day. This specimen was extra shiny and had some nice pointy spines, warranting placement in my rares/delicates ziploc. I thought I had reached the peak of the day when I was forced to stop mid conversation. Inches from my face, I spotted the subtle glint of wrinkled enamel attached to an inconspicuous pebble. If I hadn't seen one of these featured on the forum last Spring, I'd probably have moved right past it. The first fragment I gazed upon was the largest and very clearly belonged to the shark, Glikmanius occidentalis. I hurriedly gathered two more smaller chunks and tried to reassemble the tooth. Glikmanius occidentalis cladodont shark. Don't worry, I figured out to flip that smaller fragment around by the time I consolidated everything! Unfortunately, the tooth crowns and a piece of the base were nowhere to be seen. There was a little valley next to it, so the other bits may have been washed away for all I know. Nevertheless, these teeth are simply awesome. I have a soft spot for shark teeth, so a charismatic find like this will always be a trip maker! I wonder if ones with cusps still attached have ever been found? Consolidated tooth. It's pretty, but I'll admit @historianmichael has me beat with his from earlier in the year! We rounded off our time in Jacksboro checking out the far left side of the exposure, mostly around the flats. There, pyritic cephalopod micromorphs could be found in excess. Shown below is my best specimen from that area: Wiedeyoceras pingue? Thus, our time at Jacksboro had run its course and the path was set for Bridgeport. Lari was kind enough to share some turkey jerky and the best blueberry muffin I've had in a long time. We all had some nice finds out of it, but I'm sure the place is a lot more productive if caught right after a storm. This spot is definitely due for a return. After identifying everything at home, I now have a list of over 55 unique species to show for the hunt! Bob and DPS have pooled together some great resources for researching IDs, but it was nevertheless an exhaustive (and satisfying) process. Bridgeport Prior to the trip, I did some recon and found a short list of cuts around Lake Bridgeport for us to visit. Since the day was already getting a bit late, I decided we should visit only the best two of the list which exposed what I believe to be the Bridgeport Shale. It was a pretty short drive and soon enough we were back together with our eyes glued to the ground at the first spot. We were on the look out for trilobites first and foremost. Within about 5 minutes, I found the first trilobutt! First trilobutt of the day I'm not sure if there is more trilobite within the nodule, but I will try to work it down and find out. Unfortunately, the trilobites did not start popping up like crazy as I had hoped. Instead, we were mostly collecting gastropods and the occasional horn coral. I did at least manage to find a pretty death assemblage of Trepospira snails. Trepospira snails I will say the red stone eventually gave me some bad flashbacks of Woodbine busts from the past. At times, it felt like I was hunting in a pile of unfossiliferous landscaping gravel. As we began wrapping up, I managed to pull a chunk of matrix with some trilobite material on top, but I wouldn't say it's anything too impressive. Trilobite material We took a short drive over to the second and final cut which exposed the same sort of rock. I got skunked at this spot, but Lari and Cole each managed to snag their own trilobite and had success splitting the various nodules. I was happy we all came out of Bridgeport with some trilobite material to show for it! The day felt like it was gone in a flash, but my body was definitely calling it quits. It was fun to meet up with another forum member and explore some unknown territory. A future second get-together is for sure in the cards after some rainy weather . Throughout writing this report, I've left out a lot of awesome finds so Lari can share them herself. So, keep an eye out for her side of the story! Anyways, here is an overview of the finds: Top L to R: Metacoceras sp., Gonioloboceras goniolobus, Brachycycloceras normale, and Euloxoceras greenei 2nd Row L to R: Pseudorthoceras knoxense, and Ephippoceras sp. Bottom L to R: Rugobactrites jacksboroensis, Wiedeyoceras pingue?, and Domatoceras sp.? Top L to R: Lophophyllidium spinosum, Paraconularia crustula, and Lophophyillidium plummeri 2nd Row L to R: Fusunilids, and Incrustospongia meandrica Bottom L to R: Fenestella sp., and Tabulipora sp. Note: Syringopora sp.? not pictured Top L to R: Rhipidomella carbonaria, Neospirifer dunbari, and Punctospirifer kentuckyensis 2nd Row L to R: Lissochonetes geinitzianus, Wellerella osagensis, and Neochonetes granulifer Bottom L to R: Meekella striatocoastata?, Crurithyris planoconvexa, and Hustedia mormoni Top L to R: Hystriculina texana?, Echinaria semipunctata, and Kutorginella lasallensis Bottom L to R: Composita subtilita, Kozlowskia splendens, Fimbrinia plummeri, Eridmatus texanus?, and Phricodothyris perplexa Note: Differentiating between Hysticulina and Kutorginella was a bit of a challenge. Top L to R: Glikmanius occidentalis, Archaeocidarid plate Bottom L to R: Various crinoid parts including a regenerating spine on the far right. The spine left of it has strange circle impressions on it. Top L to R: Nuculopsis girtyi, and Astartella concentrica Bottom L to R: Yoldia glabra, and Allorisma costatum? Top L to R: Cymatospira montfortianus, Knightites tennulieata, Pharkidonotus percarinatus, and Euphemites vittatus 2nd Row L to R: Euphemites multiliratus, Knightites tennulieata?, Trepospira illinoiensis, and Glabrocingulum grayvillensis Bottom L to R: Worthenia tabulata, Soleniscus primigenius, and Strobeus paludinaeformis Top L to R: Amphiscapha subrugosa, Donaldina sp.?, and unknown gastropod Bottom L to R: Pseudozygopleura semicostata, and Meekospira choctawensis Hashplates: Bridgeport: Thanks for reading!
  10. This photo was sent from a person who knows nothing about fossils or geology so the questions far outnumber any answers. We hope to see it in person in 2 weeks or so and will then determine the location, confirm the formation, and provide the size. The area around Jacksboro Texas, the only information we have now, is mostly the Graham formation, so that makes it marine deposits in the Cisco group, Late Pennsylvanian. I have tried to imagine it could be a bryozoan or some kind of plant but nothing I know of is a good fit. I thought maybe someone here might recognize it.
  11. Hello everyone, I am pretty new to the fossil hunting game, mostly just picking up a few shells or leaf imprints when I am out hiking but when I returned to school in Florida I started to get a bit more interested in actually researching and exploring with the intention of fossil hunting. On the drive back to Florida from Denver I decided to break the trip up into 6-8 hour drive days and camp while hitting some fossil opportunities. Also it kept me fairly isolated with Covid restrictions. With that in mind I planned a route to hit a few different sites: Quay County, NM has reports of phytosaur teeth although I was mostly hiking at this locale. Lots of literature on the area with some nebulous directions, I puddled around on a small streambed I scouted out prior to the trip and ended up finding a fossilized vertebra which I will call a phytosaur based on its size and reports that the area appears to host these species almost exclusively. I was a little out of my element and spent a bit more time hiking and enjoying the West side of the US while camping at the free Mills Canyon Rim Campground which I enjoyed very much. Mineral Wells and Jacksboro Fossil sites, TX - well known sites that I spent a bit of time at. Pretty much every other fossil I found on this trip came from these areas. I made a mistake and passed up my planned campground at Kiowa instead staying at Possum Kingdom campground because the reviews were good and was sorely disappointed. The area is very built up and it is more of a place to bring a boat and an RV than what I wanted. But never know unless you try, there is a nicer campground at Fort Richardson near the Jacksboro locality I would recommend instead. Found a few different specimens including an intact crinoid cup, a small trilobite, and some other common specimens. Embarrassingly while at mineral wells I found what I initially took to be a trilobite in Matrix and was incredibly excited as it was by far the most distinguished find there. Fast forward to being home I cleaned the specimen and started trying to id it only to find that it didn't really fit any description...then I gave it a quick lick and discovered that it was very much still organic and warm so I have included a picture if someone wants to tell me what strange bug eggs or cocoon I likely licked. 100% not a fossil though as it started to ooze once squeezed. North Sulfur River, TX - Flooded and rained out so passed it up largely because I didn't want to try camping after wading in freezing water all day. Campground is listed under freecampgrounds and is on the Ladonia Wildlife Area. I'll hit this site on the way back. Mississippi 'Red Hot Truck Stop' Locality, MS - No luck here either although I didn't put in much effort, the campground I selected was closed so I spent a night in the back of my car and felt like getting back to Pensacola. In retrospect, I should have spent more time touring around this area but the Red Hot Truck Stop is now a Walmart parking lot and I didn't really feel like poking around that area after spending the past week hiking around some of the areas out West. So overall, a mixed success trip but, like I said I was more looking for a good way to split up a drive back home and my experience is pretty limited. I've included pictures of the specimens I found with labels, if anyone from the areas wants to correct them please feel free, I am sure that many of them are wrong. If you would like a better picture of a specimen just let me know. A: Phytosaur Vertebra B: Assorted Crinoid Discs C: Chonetinella sp. - Brachiopoda D: Ditomopyge sp. - Arthropoda E. Bactrites sp. - Mollusca...some sort of orthoconic nautiloid
  12. Chuck W

    Fall fossils in TX

    Hello all, My since we just went through Hurricane Sally, my wife said I need to get out and go collecting. Who am I to argue! So I'm planning a trip to north Texas to collect. I would appreciate and help from y'all to point me in the right direction. I have been to Lake Texoma and the Jacksboro once, briefly, in the past and really had a great time there. Any help would be greatly appreciated!
  13. This specimen from the Finis Shale of Jacksboro Texas is the first example of a Pennsylvanian nautiloid showing part of the aperture that I have found or even seen. Maybe they are common and I just don't get out enough I believe this is Stenopoceras sp. and the attached clam is probably Pseudomonotis beedi since that's the only species of that genus I can't find an image of and the others on the fauna list have ribs that curve away from center. You can help me twice if you can confirm the clam ID and show us your nautiloid apertures for comparison. Outside of shell Inside surface Edge of possible aperture Margin showing profile wedging to a fine edge Close-up of edge profile before prep completed
  14. I'm unable to identify these goniatites from the Finis Shale member of the Graham formation. Found at the Lost Creek spillway near Jacksboro Texas. At first I thought they were just extra large examples of Agathiceras sp. which can be found there because of the longitudinal lirae but I noticed some other differences. These are more evolute as well as being larger. They also have a larger whorl height to whorl breadth ratio at 1.11 to 1 compared to .85 to 1 for Agathiceras. This one shows the larger umbilical diameter of 10mm and here is a close-up of the longitudinal lirae with fine crossing radial lirae. This shows it on the venter of another specimen and here is the largest sample which would have had a diameter of around 77mm without the body chamber, much larger than Agathiceras which I believe can range from 8 to 30mm depending on the species. I would appreciate any help with these.
  15. BobWill

    Jumbo Orodus tooth

    This tooth came from the Finis Shale at Jacksboro Texas. That's in the Virgil Series, Cisco Group, Graham Formation, Late Pennsylvanian. It seems large for Orodus variabilis and has some extra odd protrusions on the lingual side that don't match the smaller ones I usually find. Is there another species we can find there or is this normal? @JGM
  16. A Russian colleague of Dr. Barbara Seuss will be presenting a poster at the March 2020 GSA meeting in Ft. Worth. It is on Finis Shale fish microremains based on their study of material from Jacksboro Texas. In October of 2016 several of us from Dallas Paleontological Society helped Barbara take sample material for her work and they are still gathering data from the resulting fossils. Dr. Seuss is with the University of Erlangen-Nuremberg in Baravia Germany and hosted another poster by a student of hers at the GSA meeting in Phoenix this year. It was on bivalves also from the Finis Shale exposures at Jacksboro.
  17. BobWill

    Odd Coral from the Finis Shale

    I found this odd horn coral at the Lost Creek Dam site near Jacksboro, Texas. It's Upper Pennsylvanian, Graham formation, Finis Shale member. The horizontal wrinkling seems very organized, looking more like the ornamentation on a conulariid or some orthoconic cephalopods and the presence of dissepiments limit the possibilities some. The bottom was already broken off so I sanded it flat and polished it a bit for a look at the septal pattern but still can't seem to place it in it's proper niche. Dibunophyllum valeriae has been suggested and Lophamplexus sp. but I'm not convinced mostly because of the horizontal patterning.
  18. rwise

    And another from Jacksboro

    Here is another I found at Lost Creek in Jacksboro, TX, Looking for ID help.
  19. rwise

    from Jacksboro, TX

    Found this first one in Jacksboro, TX, Lost Creek Dam. Finis Shale Formation, Pennsylvanian. Would like to identify. Gastrioceras? or maybe Vidrioceras?
  20. I found this twiggy fossil at the Lost Creek Dam site in Jacksboro Texas. It's the Finis Shale Member of the Graham Formation, Upper Pennsylvanian. I thought it might be a Fissispongia jacksboroensis but now I'm wondering if that is right. The two branch-like protuberances have some wavy striations on them I haven't seen before. Any ideas?
  21. DPS Ammonite

    Articulate Brachiopod

    This is a less common brachiopod collected at the rich Finis Shale site in the spillway of the Jacksboro Reservoir. It is often confused with the more common Composita subtilita which has a stronger sulcus fold and no small spines.
  22. DPS Ammonite

    Articulate Brachiopod

    This is a large specimen of a common brachiopod with encrusting Serpula sp. collected at the rich Finis Shale site in the spillway of the Jacksboro Reservoir.
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