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  1. Hello again, dear forum users. At this point in time, we began to study a point with a Cretaceous (we believe that this is Campanian based on the fauna of shark teeth and lithology) fauna. These are mainly shark teeth and fragments of cartilaginous fish. But there are also such mysteries. The main version is that this is either a fragment of coral or fragments of sea urchin needles. Particularly interesting is the strange formation on one of them, as if something had attached itself and was about to grow - a brachiopod? The third question is about the tooth of synechodus, is it a tooth of synechodus lerichei? I'm right? Best regards, Anton.
  2. There wasn't a huge amount of information to go off of from what I found, so I was wondering if anyone here could help who is familiar with this material. I was not sure if the label and ID provided for this specimen was accurate or not, and the color doesn't seem to match up with the few specimens I've seen online which are more of a lighter brown to tan. Scanisaurus is maybe just used as a wastebasket term for most of what comes out of the deposit? Species: Scanisaurus nazarowi Age: Cretaceous, Campanian Formation: Kristianstad Basin Provenance: Northwest Skåne Province, Southern Sweden Just looking at the wiki, for plesiosaurids, there's Scanisaurus, cf. Elasmosaurus, and indeterminate polycotylids. Measurement is in centimeters.
  3. Perhaps one of the most exciting scientific papers in a while about the genetic diversity of the Tyrannosaurid genus Tyrannosarus itself (the genus that includes the famous and well documented T-rex) was just announced and published (or at least the abstract of it)!!! Image Credit: Dalman et al. 2023 (abstract) and the Society for Vertebrate Paleontology (SVP). https://vertpaleo.org/wp-content/uploads/2023/10/2023_SVP_Program-Final-10032023.pdf At the Society for Vertebrate Paleontology's annual meeting for 2023, Paleontologists Dr. Sebastian Dalman, Dr. Philip J. Currie, and seven other experienced Paleontologists and experts on the Tyrannosaurid theropod dinosaurs published an abstract on October 21, 2023 about a new species of Tyrannosaurus (Tyrannosaurus mcraensis) from the Hall Lake Formation dating 72 Million Years ago to the Campanian-Maastrichtian Cretaceous of what is now New Mexico!!! This not only gives insights on the origins of the genus Tyrannosaurus, but validates previous hypothesis over the years (at least since 2013) that a unique giant Tyrannosaur from southern Larmidia (now Western North America) that lived during the Campanian-Maastrichtian Cretaceous!!! Names given to this animal over the years include Alamotyrannus brinkmani and Tyrannosaurus brinkmani. A Digital Reconstruction of the Tyrannosaurus species Tyrannosaurus mcraensis and it's size compared to an average Human, April 2022. Image Credit: Artist LancianIdolatry https://twitter.com/LancianIdolatry/status/1511016414252978182 This is especially true given for how long the debate has been raging on the Validity ofThe species Tyrannosaurus mcraensis was when fully grown the same size of the averaged size adults of the later Tyrannosaurus rex from the later Maastrichtian Cretaceous. By the look of things with the Paper and the experienced paleontologists and Tyrannosaur experts who authored it, it seems just by looking at its abstract it will be be far more through and accurate than the recent Gregory S. Paul Paper from 2022 and maybe even prove the validity of the debate Tyrannosaur species Tyrannosaurus vannus from the 70-66 Million Years ago dated Javelina Formation of what is now Texas. But I'm wondering if anyone has more information on this study and the potential of it's results?
  4. Pierre shale, Millwood. Western Interior Seaway, Campanian.
  5. Fossil marine vertebrates (Chondrichthyes, Actinopterygii, Reptilia) from the Upper Cretaceous of Akkermanovka (Orenburg Oblast, Southern Urals, Russia) Jambura et al., 2023 https://www.sciencedirect.com/science/article/pii/S0195667123003075?via%3Dihub Tylosaur (top), Polycotylid (middle), and Plesiosaur indet. teeth from the southern Urals.
  6. Jared C

    Hadrodus cf. priscus

    From the album: Texas Campanian (Cretaceous)

    Incisor in a portion of premaxilla from Hadrodus cf. priscus. The teeth are not diagnostic to species, and current unpublished research has questions about the validity of certain species within the genus - not my place to discuss openly just yet Though I used to have this in my Santonian album, closer investigation of the geology of the site has led to a pretty conclusive lower Campanian age. Close the the Austin Chalk/ Ozan boundary
  7. From the album: Texas Campanian (Cretaceous)

    cf. Stereocidaris, with possible affinities to S. sceptrifera Lowermost Campanian TX This Cidarid seems to have affinities with Stereocidaris sceptrifera from the late Cretaceous of Europe, but the geographic separation and lack of literature on this new world form suggest a potential undescribed species of Stereocidarid. This is the same taxon as the other Cidarid in this album - both were found the same day, at the same locality Notice the partial aristotle's lantern (mouth), as well as a few of the short, flattened scrobicular spines (which protect the muscles of each primary spine) attached near the bottom. Though crushed, this specimen is excellent. Huge thanks to @JohnJ for the excellent photos, and both John and @Ptychodus04 for the prep Discovered April 1, 2022
  8. From the album: Texas Campanian (Cretaceous)

    cf. Stereocidaris, with possible affinities to S. sceptrifera Lowermost Campanian TX This Cidarid seems to have affinities with Stereocidaris sceptrifera from the late Cretaceous of Europe, but the geographic separation and lack of literature on this new world form suggest a potential undescribed species of Stereocidarid. Huge thanks to @JohnJ for the ID tips and excellent photos and @Ptychodus04 for the prep. Discovered April 1, 2022
  9. A new mosasaur, related to the genus Clidastes, has been described from the Middle Campanian Pembina Member of the Pierre Shale Formation of North Dakota near the town of Walhalla and has been given the undeniably cool name of Jormungandr walhallaensis, after the world serpent of Norse mythology! Zietlow, Boyd and Van Vranken, 2023. Jormungandr walhallaensis: a new mosasaurine (Squamata: Mosasauroidae) from the Pierre Shale Formation (Pembina Member: Middle Campanian) of North Dakota.
  10. Fullux

    Black Creek group

    Howdy all. Trying to make a list of floral and faunal species from the Black Creek group of North Carolina. Does anyone know of any species other than: - Appalachiosaurus montgomeriensis - Deinosuchus rugosus/schwimmeri - Hypsibema crassicauda - Lophorhoton atopus - Coelosaurus antiquus - Leptoceratopsidae indet. - Dromaeosauridae indet. - Brachyphyllum squammosum - Moriconia cyclotoxon - Geinitzia reichenbachii - Androvettia carolinensis Floral species would very much be helpful as I'm attempting to reconstruct the ecosystem that was present there, but anything would be very helpful. Thanks, Anthony
  11. Andúril Flame of the West

    Stratigraphic Range of Deinosuchus

    Having the opportunity to review some literature today, I came across an interesting figure that I had not noticed beforehand. In their paper describing the fauna of a Severn Formation locality in Maryland, Harstein et al. (1999) include a photograph of a tooth assigned to Deinosuchus rugosus (Specimen 59). This struck me as strange since the Maastrichtian is typically considered to be early to middle Maastrichtian in age. However, from what I gather it seems that the youngest confirmed occurrences of Deinosuchus are in the late Campanian. Have I missed some literature and is Deinosuchus known to occur in Maastrichtian strata? It may also be important to note that in the paper, the particular lens where the tooth was found is described as a thin lag layer occurring at the contact between the Severn Formation (Maastrichtian) and the Matawan Formation (Campanian). I am inclined to believe that the fossils are from the Severn Formation and that they are indeed Maastrichtian in age, but is it possible that they may instead be from the Matawan formation? As always, any expertise is greatly appreciated . Hartstein, E. F., Decina, L. E., & Keil, R. F. (1999). A Late Cretaceous (Severn Formation) Vertebrate Assemblage from Bowie, Maryland. The Mosasaur, 6, pp. 17-23. https://drive.google.com/file/d/0B1HtUwlDORQ0Q29JZjF2NUg1QXc/view?resourcekey=0-5BbGrGtBu1LIFY7jLj8LGQ.
  12. Mikrogeophagus

    Lanieria uvaldana

    From the album: Anacacho Formation

    Lanieria uvaldana, South TX Maastrichtian, Cretaceous Sept, 2023
  13. Mikrogeophagus

    Menabites danei

    From the album: Ozan Formation

    Menabites danei, Central TX Campanian, Cretaceous Oct, 2023 From now on I will make an effort to collect more Ozan ammonites despite their fragility! Here is the first.
  14. Mikrogeophagus

    Gauthieria sp.

    From the album: Ozan Formation

    Gauthieria sp., Central TX Campanian, Cretaceous Oct, 2023 A rare species of regular echinoid that is actually uncommon for my site. They manifest as flattened disks and are sometimes interspersed between heart urchins.
  15. Hipockets

    Deinosuchus ?

    Found last week in SE North Carolina, Campanian,Tar Heel formation. I was thinking Deinosuchus but has globidens characteristics also. total length is 2 in., Dia. is 1in. 1/2 in round cavity, length of enamel alone is 7/8 in. Can someone confirm what it is? Thanks
  16. These are fossils from the early Campanian of northwestern New Mexico, collected on BLM-managed land as part of the Menefee Expedition. The Menefee Expedition, which has run yearly since 2011, is a multi-institutional effort combining the talents of the Southwest Paleontological Society, Western Science Center, Zuni Dinosaur Institute for Geosciences, and formerly the University of Pennsylvania, permitted under the Bureau of Land Management in New Mexico. Fossils collected as part of the Menefee Expedition are prepared and stored at the Western Science Center in Hemet, California. If you'd like to watch the day-by-day of the expedition, be sure to check out the Expedition Video logs on YouTube! Baenid turtle shell- my find! Dinosaur limb end- my find! Large croc tooth, likely Deinosuchus- volunteer find! Leaf and stem- my find! Gar scale- my find! Dinosaur tibia- volunteer find! Brachychampsa tooth- my find! Bivalve, which I think is a unionid- my find! Crocodilian tooth in matrix- my find! Finally, a dinosaur toe bone- volunteer find!
  17. A new paper that describes Furcatoceratops elucidans a new centrosaurine ceratopsid from the Judith River Formation of Montana Unfortunately it's paywalled https://www.sciencedirect.com/science/article/abs/pii/S019566712300188X Anthony Maltese posted this This was the Ava skeleton Blog by A. Maltese http://rmdrc.blogspot.com/2015/02/avaceratops-layout.html Reposted by D. Evans
  18. Hello everyone! This is a partial mosasaur jaw with other associated bones i found in the Early-Mid Campanian Woodbury Formation of New Jersey over the summer. One of my best finds to date.
  19. Mikrogeophagus

    Red Zone Road: NSR Highlights

    With my limited time in North Texas before my move south, I decided to revisit my favorite sites as opposed to scouting new ones. The NSR is a classic locality, but I had never actually gotten to check out the famed red zone for myself. Yesterday, I made the drive to the fossil park. I was supposed to hunt with a couple others, but it unexpectedly turned into a solo hunt. I won't complain though. The vast river emanates a magical aura that is uniquely felt when you're exploring on your own. The primary goal of the day was to snag a decent specimen of the red zone ammonite, Trachyscaphites spiniger! In an attempt to beat out the stiff hunting competition and high afternoon temps, I arrived to the site in the early hours around seven. Unsurprisingly, I was far from being the first car in the lot. As luck would have it though, none of the people there before me had their sights set on the distant red zone exposures. It's a long and taxing trip that only so many people (the crazy ones) are willing to undertake. After crossing under the 2990 bridge, I took in the view and tried to visualize where the destination might be. It was quite daunting, but the journey of a thousand miles begins with a single step. Red Zone Road It was gonna take a lot of walking to reach the mouths of the red zone creeks, so I tried to keep the gravel hunting minimal along the way. Nevertheless, my eyes were still scanning the ground around me and the vigilance steadily began to pay off. After a few Enchodus fangs and a Carcharias holmdelensis tooth, I came across the first prize of the day. Cemented together in red zone matrix was a mass of turtle shell that I had never before seen a similar specimen of. It has some good weight to it and cool three dimensional character. I don't know enough to identify it to a genus assuming that's even possible. I believe Archelon and Ctenochelys are known from the NSR as well as other genera I'm sure. Articulated turtle shell fragments in red zone matrix Some time later, I came across an interesting bone fragment that I don't have much of a clue about. The texture seems like fish. It has pronounced ridges running longitudinally and a U-shaped spongy cross section. I held onto it in case it might be something cool. Mystery bone Here and there I came across various red zone ammonite chunks to whet my appetite. None of them were keepers in part because I had high hopes for what lay ahead. Maintaining my steady pace brought me to the mouth of the first creek I had circled. Yesterday's 25 foot rise was still draining and the sound of rushing water filled the air with occasional thuds from falling shales. In the high cliffs I could see a distinct red band of matrix slicing through the grey shales. Tracing it with my eyes, I followed the line upstream until it was within reach. It was absolutely filled with phosphate chunks and nacre-covered Baculites. After a short time, I locked onto a Trachyschaphites that was just poking out. Excitedly, I threw out my tools and began excavating. My enthusiasm was quickly washed away as I realized the chunk sticking out was just a chunk. This sequence of events repeated itself along the entirety of the creek and before I knew it, I was exiting with a bag of assorted Trachyscaphites pieces. The only interesting things to show were a beat up red zone mosasaur vert and some snails. Red zone mosasaur vert Gastropods from the red zone Now the temps had crossed into the 90s and beads of sweat were covering my face. Wanting to take a break from the red zone, I began a thorough search through the massive gravel bar outside the creek. It took awhile to warm up my hunting goggles, but eventually I spotted the first keeper of the bar: A big ole worn mosasaur tooth. Sadly, it was sliced in half and had chunks busted out of it. Not too long after, though, I got it a smaller, much more complete friend. Likely Tylosaurus proriger After these mosasaur teeth, I scored what I like to call a "pseudo-mosasaur" or its other name, Pachyrhizodus. It was pretty easy to spot the difference since a little bit of bone was attached beneath the crown. Still a cool little fish tooth. Pachyrhizodus I'm not very good at spotting artifacts despite having spent many hours in the creeks of Austin. Now and again though, I manage to blindly stumble my way into a killer point or two. Wedged into the sand beneath the receding waters, was the unmistakable base of a Gary. Haven't found one of these before, so I was pretty happy to add this NSR classic to my collection. Gary in situ Gary point The last and most interesting find of the bar was a huge chunk of Xiphactinus jaw! It seems to match up exactly with the very distal end of the lower jaw. Within two matrix-filled tooth sockets are a couple of emerging teeth. Distal end of a Xiphactinus lower jaw with a couple of teeth. Finally, it was time to set my sights on the creek across the river. To my knowledge it doesn't have a name as it is quite small. The disappointment of my previous red zone expedition set my hopes low. Although the tree cover was nice, with it came swarms of mosquitos and some sort of biting fly. I spent most of my walk through it flailing my arms trying not to become a walking buffet. The red zone was much better exposed and I quickly spotted a couple of Squalicorax that sadly weren't keepers. There were many Trachyscaphites fragments to waste my time, but at long last I ran into exactly what I was looking for! With careful swings, I worked the heteromorph out of the shale and quickly stored it safely in its own private Ziploc bag. With the primary objective met, it was time to quickly evacuate the mosquito hellhole and return to the safety of the sweltering sun. Trachyscaphites spiniger heteromorph (my favorite ammonite). There is a significant crack that hasn't completely split. Hopefully the b72 will hold. It was about 4 pm and I was close to my limit. There was another spot further ahead known for arrowheads that I wanted to see, but I was saving that for the people I was intending to meet (no cell service so I didn't know plans had changed). It became apparent no one was coming, so I gathered my bucket and pack for the long trek home. The adrenaline of fossil hunting had definitely carried me through the day. The river now seemed endless and every step of foot sucking mud taxed me more and more. After retracing my route at home, it seems I river walked at least 5 miles! As I crawled into my blistering hot car, I told myself one red zone hunt was enough for the rest of my life. But after a good night's rest and cataloguing my finds, I'm ready to go again . I guess we'll see how I feel next summer. Thanks for reading!
  20. Mikrogeophagus

    Tylosaurus proriger

    From the album: Ozan Formation

    Tylosaurus proriger, North TX Campanian, Cretaceous Jun, 2023
  21. Mikrogeophagus

    Xiphactinus audax

    From the album: Ozan Formation

    Xiphactinus audax, North TX Campanian, Cretaceous Jun, 2023 Two teeth are erupting from the sockets. This is the distal end of a lower right jaw.
  22. Mikrogeophagus

    Trachyscaphites spiniger

    From the album: Ozan Formation

    Trachyscaphites spiniger, North TX Campanian, Cretaceous Jun, 2023 My new favorite ammo in my collection.
  23. Fullux

    Goblin shark?

    This tooth was found in Montgomery County, Alabama, and is about 70 million years old. Looking for an ID on the species. I'm pretty sure its a lateral from a goblin shark but I'm not certain.
  24. Hey everyone, I've recently been interested in a weird tooth morphology I have found a couple times in the Middle Campanian Ozan of Austin. At the moment, I have it ID'd as Serratolamna cf. caraibaea based off of a paper on Aguja sharks (https://doi.org/10.1016/j.cretres.2016.08.008). My specimens seem to be a single anterior and single lateral. These teeth appear to have a nutrient groove, multiple pairs of cusplets, smooth labial and lingual faces, and a basal bulge overhanging the root. They are each about 11 mm from root to tip of the cusp. Something to note is that S. caraibaea had previously only been found in Mexico, Trinidad, and West Africa. I wonder if it's some warmer water species? I wish I could read the species's original description, but alas I have no access to the paper. (Left): Anterior tooth (L) and lower? lateral tooth (R); (Right): Anterior tooth (L) and lateral tooth (R) (Left): Labial view lower? lateral tooth; (Right): Lingual view lingual tooth I've done some digging trying to find this tooth online from places like the NSR and New Jersey, but the closest I can find is Carcharias samhammeri which I think has too many differences. C. samhammeri imo has a more pronounced lingual protuberance, only a single pair of cusplets, and no basal bulge on the labial side, and "thinner root lobes" (hard to put into words sorry). Carcharias holmdelensis has similar issues along with the presence of striations on the lingual face. Scapanorhynchus doesn't look right and neither does Cretalamna. In fact, what partly prompted me to make this post was noticing this tooth's apparent similarity to a Paleocene/Eocene taxon called Brachycarcharias lerichei. What makes the story even more interesting is its criminal history, formerly being under the name Serratolamna lerichei before the creation of Brachycarcharias of the family Odontaspididae. Brachycarcharias lerichei from elasmo.com. Note the anteriors and laterals! Brachycarcharias lerichei lower lateral from elasmo.com The genus Serratolamna itself also has some shakiness to its name. A similar taxon, Serratolamna khderii, of the Campanian in France and Jordan has a past of jumping in and out of the families Odontaspididae and Serratolamnidae. All this to say I'm beginning to wonder if there is a taxonomic connection between my specimens and the genus Brachycarcharias or at least Odontaspididae that isn't yet recognized in academia. One major issue though, is that I only have a couple of these teeth (I've got a really bad itch to hunt in Austin again, but that'll have to wait). I am wondering if any other Campanian hunters have come across something similar and has photos to share? And for the shark experts, I wonder what are your thoughts on this information? Does it pique your interest or is it a "nothing burger"? Any clarification is immensely appreciated! It's not the craziest or coolest tooth design by any means, but it's enough to keep me longing for some answers.
  25. Too lazy to translate it myself, I just put the finished pdf through the google translator : Fossilien_2023_21052023_E.pdf Some, but not all, formating is lost, though. And its just one page of text besides three pages of pics. No worries about the detailed site map, as we already know, nobody cares about rudists . Here is the link to the original, German version, for our German speaking members : Fossilien_2023_21052023 (pdf, 3.4 MB, personal homepage) Here are the original pics: Have fun ! Franz Bernhard
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