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Found 14 results

  1. 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!
  2. As I was recently doing some research on the prehistoric shark genus Cladodus, I came across some info that classifies the genus as a member of the family Cladoselachidae, Order Cladoselachiformes. https://en.wikipedia.org/wiki/Cladoselachidae This is somewhat confusing to me as mindat and the Paleontological Database aka fossilworks list Cladodus as a member of the family Ctenacanthidae, Order Ctenacanthiformes. https://www.mindat.org/taxon-8657177.html http://www.fossilworks.org/cgi-bin/bridge.pl?a=taxonInfo&taxon_no=104838 I'm personally leaning more towards Cladodus being a member of at least the Ctenacanthiformes. But I'm curious what are the origins of this taxonomic confusion on the genus Cladodus's phylogenetic placement in the Chondricthyan family? Is Cladodus a member of the Cladoselachiformes or Ctenacanthiformes? What do you guys think?
  3. I recently have been reanalyzing some fossils I found with @Tales From the Shale and another friend on October 8th, 2022 at a Pennsylvanian era roadcut in Oglesby Illinois! One of the specimens I had previously put under a dissecting scope, but was still unsure about its exact ID. I recently took a look at the specimen again a couple days ago and I believe its a partial tooth of a large ctenacanthiform shark. Here is the specimen under a dissecting scope! After a closer look, I noticed the parts of the tooth that could have connected to the medial cusp and lateral cusp on the left side of the tooth. For comparison, I compared the tooth to other Ctenacanthiform teeth, including cusplets section of the teeth (between the medial cusp and lateral cusp). The number of preserved cusplets on the tooth don't seem to match Gilkmanius (which usually doesn't appear to have cusplets between the medial and lateral cusps) or the other reported bond formation ctenacanthiform Heslerodus. The closet match was Saivodus striatus, but I'm not 100% positive on the ID. Below are some comparison images with a Saivodus striatus tooth. https://www.uky.edu/KGS/fossils/fossil-of-the-month_2022-07_Saivodus.php The first image here shows where I think the lateral cusps are (highlighted with green circles) on the specimen (not dissecting scope images). The second image shows where I believe the medial and lateral cusps would have been located (highlighted with green circles) with the right side being where the medial cusp was and the left side where the left lateral cusp was. Here are the same comparison images but with the dissecting scope. I'm sorry if some of the images are really blurry (still trying to fix my phone's camera). But what do you guys think? Do you guys know for the specimen what would be a good ID for it?
  4. I've visited the Pennsylvanian Bond formation in Oglesby Illinois a few times but have only found a few cladodont teeth so far! I find a decent bit of teeth from crusher plate chondrichyans like Deltodus, but I've also heard there have been some large cladodont teeth found in the area. I'm just curious what is the largest cladodont teeth found in Oglesby Illinois?
  5. Samurai

    Cladodont Tooth

    From the album: Chondrichthyan Teeth From The Pennsylvanian Period

    Not exactly sure what cladodont this one belongs too. Less than 10mm due to missing the tip.
  6. Collector9658

    Cladodont tooth- Saivodus?

    I was pulling out a few slabs to work on and ended up finding a big Cladodont tooth. It split cleanly in 3 pieces. It appears it would fit back perfect, and be preparable. The piece with most of where the root is, is either missing or concealed inside rock still possibly hiding cusplets. The tooth looks like it would measure about 3.5-4cm in length if fully exposed. Unfortunately, I lack the tools and probable skill to prepare this any further. I was still curious if anyone was more familiar with Cladodont teeth, as this definitely is not like the last one, a Glikmanius tooth. Saivodus is one of the bigger and slender matches i could come up with, any thoughts?
  7. Joseph Fossil

    Bond Formation Cladodont species ID

    Recently I went on a fossil hunting trip with a few friends to a roadcut in Oglesby Illinois from the Pennsylvanian Bond Formation. This was around July and I found a lot of cool Brachiopod fossils, but I decided a few days ago I wanted to get a closer look at some of the larger matrixes I collected to see if I missed something! At the very edge of one the matrixes, I discovered a small pretty exposed cladodont tooth that I couldn't find a specific ID of? The specimen is about 1/2 inch in length (5.0 mm.). But I wanted to see it a bit closer, so I put it under a microscope one of my college professors let me borrow. The specimen has a pretty slender shape overall and the top of the medial cusp appears to be broken off. I compared the specimen to other ctenacanthiformes from the Bond like Heslerodus and Gilkmanius. It does resemble Gilkmanius a bit, but I looked further and have drawn a slightly different conclusion - this could be a specimen of a juvenile Saviodus striatus. https://www.uky.edu/KGS/fossils/fossil-of-the-month_2022-07_Saivodus.php Like Saivodus, the Medial cusp is incredible slender for what's left of it. The Laterial cusps and cusplets on Saivodus teeth are much smaller compared to the Medial cusp than those of Heslerodus and Gilkmanius. On the microscope image, you can just barley make out a small cusplet next to the Medial cusp and a small Lateral cusp on the left side of the image (since under a microscope, it's actually on the right side of the tooth). Still, I'm not 100% sure my ID is correct. I was wondering if anyone is able properly ID this specimen? I'm also wondering if this cladodont tooth is indeed a specimen of Saivodus striatus or another member of the genus (which I would be awesome) or a a member of different Ctenacanthiform genus (which also would be awesome)?
  8. ThePhysicist

    3D printed teeth

    From the album: Devonian

    3D prints of Devonian shark teeth I sculpted (see this topic). In grey is a Phoebodont, in gold is Cladoselache.
  9. We started working on two early forays into micro fossils over a year ago when we cracked open the vile of Permian matrix from Kansas. Those tiny Neva Formation formation fossils and the even older and smaller Genundewa Limestone fossils proved to be extremely challenging, sometimes very frustrating and all kinds of fun. The results were few shark fossils that made it from matrix to the safety of the display cases lol There were several lost or broken shark teeth and one pulverized to dust by a millimeter worth of thumb slippage. If we judged this by volume, one could say this wasn’t successful. I would call it an overwhelming victory for us. We didn’t find a lot but we nailed our three target morphologies plus we found an unexpected gem. The goal with the Neva material was simple Oceans of Kansas website provided the examples of a small unnamed Ctenacanthiformes/Cladodont tooth from this formation. That was it. I only needed one and we found 3. Unfortunately the first got crushed. The second found by our friend @Tay Francis but I lost it. It was on our third and final complete search that yielded one last Cladodont. This one survived and made to it’s final home in our display. Our youngest tooth in this order. Victory after a few defeats is no less a victory lol The Devonian Genudewa from New York yielded a half dozen partial Phoebodus type teeth. We also found 4 partial Omalodus teeth.Omalodus is also a relative of Doliodus. For me, this is so cool. We found a connection to a transitional shark ! The biggest surprise was a tooth that seemed a very close match to teeth I’ve seen described as Wellerodus, a relative of Antarticlamna. Devonian era New York does have some descriptions of these tooth morphologies and my tentative ID’s are based on publications so Im fairly confident in saying we found a couple of teeth from important early shark families. I’ll be starting another round of Paleozoic micro shark hunts including a return to both of these formations with new matrix. We will be better prepared with micro fossil slides and better handling. We are going to try a few different matrix samples including Maple Mill. I will get better pictures when I can but I’m just glad to have finally finished sorting and separating these tiny delicate teeth. First pic is the Kansas Cladodont Second pic on the left are Phoebodus, the right holds Omalodus and possible Wellerodus teeth.
  10. fossilsonwheels

    Cladodoides

    From the album: D/C Boundary Sharks

    I think this Cladodont tooth does belong to Cladodoides. I am not 100% on that ID but still a nice early Cladodont tooth. Classified as Ctenacanthiformes.
  11. Found this guy whilst walking to the mailbox. Probably the most exciting random and unexpected find I've had to date. I turned over a flake of limestone that had separated from a larger section lining my driveway and there it was. It's roughly 1 cm by 1 cm. Here it is after some light roughing out. #1 #2 I am very happy the right side cusplet survived! #3 Interesting - unsure what this is and if I should spend the time trying to expose it further. #4 Specimen as it is now. Still needs a lot more work. I'm hesitant to progress further until I decide how I want to display it. I can't decide if I'll leave the other fossils around it or not, but I am leaning on doing so. What do you think?
  12. fossilsonwheels

    Our new Shark Education Displays

    Pictures first, full descriptions will follow Paleozoic Sharks and “Sharks”
  13. I knew it was going to snow today, so I thought that I would go out yesterday to a Pennsylvanian roadcut that has matrix from the Bond Formation exposed near Oglesby, Illinois. I did not spend much time there, put it was nice to be out. The area still has a lot of snow cover because it sits in the shade most of the day and there will even have more since we are getting 2-3”. Besides some brachiopods that I found, I also found this Cladodont Tooth that was on the bottom of a piece that I picked up. Though not complete, I still like it. Thanks to @deutscheben and @Peat Burns for the ID.
  14. My son and I are doing our first Shark Adaptation classroom education program in March. We are using fossils from across the timeline of sharks to explain to the students how sharks have managed to stick around this planet for some 430 or so million years. I am very proud of the relatively small fossil shark collection we have. The kids will get to see and in a lot of cases handle some fossils from badass sharks. I thought it would be fun to put some of that collection and bits of the information we present. Eventually I will include the art work my son is producing. He is 5 months away from graduating high school so I limit his time on this art while he works his final art projects for school. The first shark we cover is also one of the most fun for me. The Cladodont sharks are pretty cool and as I recently learned present a perfect opportunity to utilize them in two different spots in our presentation. They start off the program because of Cladoselache. They were not the first shark but they are the basic design for sharks that would be recognizable to 3rd and 4th grade students. They had body type that modern sharks use and they had some fearsome looking teeth. They may be really small teeth but they were deadly if you were a small fish. Science thought these little sharks went extinct during the Great Dying but in 2013 that theory was proven wrong. There were Cladodont teeth found in France that dated to 120 million years ago. They survived the Permian by moving to deeper waters. The small shallow water sharks apparently became very successful as smaller deep water sharks. The physical adaptations are important but the adaptive behavior of sharks is a huge part of how sharks have survived for so long. We only get a few minutes on each shark so that is the basic stuff we will tell the kiddos. Here are the teeth. Pic 1- the unidentified Cladodont tooth. I love this tooth. It is one of my favorites. Under the micro eye, it looks so freaking cool. It could be a Symmorium. It could be something else. It might even be something new. It is from Russia and dated to 320 million years. This will get donated for research at some point. Pic 2- Cladodus belifer. A Mississippian tooth from Biggsville Quarry in Illinois.
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