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Found 219 results

  1. Hello! I have collected quite many specimens with Trochactaeon snails from April to May 2020. They all come from the Upper Santonian to Lower Campanian upper Geistthal-formation or Lower Afling-formation of the Gosau of Kainach in western Styria. Some of the specimens contain abundant black, wavy, "folded", shell fragments. They seem to grow on the Trochactaeon snails in some places. They resemble small oysters in some ways. Unfortunately, I have not found anything conclusive about their identity. I found a pic in a paper of Kollmann (2014), with some somewhat similar, unidentified bivalves growing on an Upper Cretaceous snail (last pic). Other accompanying fossils are very rare fragments of phaceloid coral colonies (they to not grow on the snails, though). Any suggestions are highly welcomed! Thank you very much! Franz Bernhard First specimen is a double sided polished slab with abundant black shell fragments. Some of them seem to have grown on the Trochactaeon snails (epibiontic?). Here are some individual polished snails with bivalve fragments. Some of them seem to have grown on the snails (white polygons). The circular things in the middle left pic seem to be the same; there is a snail shell just a few mm below the polished surface at this spot (the specimen is very thin there). Rarely, also on weathered surfaces these bivalves(??) can be seen, growing on the snail shell. But I am not really sure, if this is the same thing as in the polished sections or if this is something else: This is the reference pic from Kollmann (2014), epibiontic bivalves on Nerinella grossouvrei. Thanks a lot!
  2. New study confirms the power of Deinosuchus and its 'teeth the size of bananas' by Taylor & Francis The open access paper is: Cossette, A.P. and Brochu, C.A., 2020. A systematic review of the giant alligatoroid Deinosuchus from the Campanian of North America and its implications for the relationships at the root of Crocodylia. Journal of Vertebrate Paleontology, p.e1767638. Yours, Paul H.
  3. A. sarcophagus or T. rex?

    Hello all, I collected this tooth last weekend along the Red Deer river in Alberta, and would like to know if it's possible to differentiate it as either A. sarcophagus or T. rex. I'm about 90% sure that it's from a deposit of the Horseshoe Canyon Formation, but the region also has exposures of the Scollard which introduces the possibility that this is from Tyrannosaurus. I had to leave the tooth with a friend until I can apply for a disposition certificate, so I can't get any additional photos, but I made a point to get pics of the major diagnostic features used to ID theropod teeth. Denticle spacing is 0.5mm, or 2 per millimetre: Thanks.
  4. Upper Campanian Foraminifera

    Upper Campanian foraminifera from Northern Germany. We found in the quarry of Laegerdorf near Hamburg. We think it is a Lituola. What's your opinion ? It is agglutinated and the specimens have such areal, multiple openings. See more of our finds at https://foraminifera.eu/loc.php?locality=Laegerdorf+Neue+Heidestrasse
  5. Specifically on the east coast if possible, but west coast suggestions are welcome too. I've found videos of them being discovered such as the one bellow and I know which states they're in, but no specific location is given. Any and all help is very much appreciated, thank you.
  6. Triakid shark?

    hi guys I was looking through some chalk Blocks obtained in a great trade and aside from the usual oysters and other common teeth I found this one and I was wondering whether you could help ID it , it’s from the campanian of hallencourt, maybe @Al Dente will know thanks all p,a it’s about 1mm I was lucky to find it with no microscope
  7. Yet Another Bearpaw Fm. Oddity

    Hello all, I recently found this strange fossil within a sandstone concretion from the late Campanian marine Bearpaw formation. I'm very familiar with the typical ammonites and other molluscs of the formation, and haven't seen anything like this - is it some sort of nautiloid, or something else entirely? Thanks.
  8. A strange fossil (Bearpaw fm.)

    Hello everyone, A few weeks ago I came across this fossil in the field, and couldn't make ends of what it could be. The locality that it was found in represents a shallow marine lagoon environment, deposited in the late Campanian marine Bearpaw formation of SK. Typical finds at that locality (all within sandstone concretions) include nacreous mollusks, as well marine vertebrate material and decapods which are preserved as glassy black, similar to this specimen. Because of this, I'm inclined to think that this fossil is either from a vertebrate, or possibly a chitinous organism. I'm totally stumped either way though. I won't be able to provide any more photos unfortunately, as this one was left in the field. Note that this fossil was actually preserved in three dimensions - unfortunately I don't have a photo, but you can see on the leftmost split on the top half of the concretion that there's a plate that extends down into the concretion. This plate was roughly triangular in shape, and had gentle striations radiating from the middle point toward the ends. Thanks.
  9. Saitta, E.T., Vinther, J., Crisp, M.K., Abbott, G.D., Kaye, T.G., Pittman, M., Bull, I., Fletcher, I., Chen, X., Collins, M.J. and Sakalauskaite, J., 2020. Non-avian dinosaur eggshell calcite contains ancient, endogenous amino acids. bioRxiv 2020.06.02.129999 preprint doi: https://doi.org/10.1101/2020.06.02.129999 https://www.biorxiv.org/content/10.1101/2020.06.02.129999v1 https://www.researchgate.net/publication/341881580_NON-AVIAN_DINOSAUR_EGGSHELL_CALCITE_CONTAINS_ANCIENT_ENDOGENOUS_AMINO_ACIDS https://www.researchgate.net/profile/Evan_Saitta Free pdf: https://www.biorxiv.org/content/10.1101/2020.06.02.129999v1.full.pdf Yours, Paul H.
  10. Hello Fellow Forum members, Here are several trips that occurred during late 2019 or early 2020. If there are any finds that you'd like better id'd or photographed please let me know. All finds come from the late cretaceous deposits of New Jersey. I experimented with labeling the finds in Inkscape but it was computationally intensive and I didn't continue it. The last photograph is a find that I would appear an identification on.
  11. A new report about the Cretaceous (Campanian) bivalves of the Coffee Sand In Mississippi is now available for downloading. It is: Dockery, D.T., 2020, Cretaceous (Campanian) Bivalves of The Coffee Sand In Mississippi. Open-File Report OFR-319. Department of Environmental Quality - Office of Geology, Jackson, Mississippi. https://www.mdeq.ms.gov/geology/work-areas/publications-and-map-sales/categories/open-file-reports/ofr-319-cretaceous-campanian-bivalves-of-the-coffee-sand-in-mississippi-60272/ https://www.mdeq.ms.gov/geology/work-areas/publications-and-map-sales/categories/ In addition, two older 7.5 minute geologic quadrangles for Tishomingo County, Mississippi, are now online at: https://www.mdeq.ms.gov/wp-content/uploads/2018/02/OFR5_BelmontDigitized.pdf https://www.mdeq.ms.gov/wp-content/uploads/2018/02/OFR6_Tishomingo_BishopDigitized.pdf https://www.mdeq.ms.gov/geology/work-areas/publications-and-map-sales/categories/ Yours, Paul H.
  12. Paper reassess the previous referral of specimens to Rubeousaurus ovatu and determines it represents a new centrosaurine taxon, Stellasaurus ancellae in the Two Medicine Formation in Montana https://royalsocietypublishing.org/doi/full/10.1098/rsos.200284 Artwork by AndreyAtuchin Nasal horn
  13. Pseudocorax topic

    This topic is a short continuation of my previous topic on my Squalicorax collection, which can be seen here: This time I have chosen to show my Pseudocorax teeth. As with the Squalicorax teeth, I am open for trades and buying new additions. The oldest examples of Pseudocorax in my collection come from the Lower Campanian. Like the Squalicorax genus, they start off as a genus with very small teeth. Pseudocorax granti (x16) Ozan Formation Lower Campanian Moss Creek, Fannin County, Texas, United States of America See you guy tomorrow, Sander
  14. Quick hunt at my desk

    http://www.thefossilforum.com/index.php?/topic/40479-somewhere-lost-in-the-fog-in-the-deep-heart-of-picardyfrance/ hi guys got some great matrix from @nalathat came from the picerdy chalk , the topic above shows what you can find sadly no squalid for me but still great fun to search through, took a few hours of picking at it with a pin vice but happy with the results what I started with a few teeth poking out what I found from looking what fell of in transit I picked at it and reduced it to rubble which I have yet to look through but here is what I found in the process larger oysters,some weird ones, they are all complete shark teeth fish plates? bottom plates of oysters odities echie spines coral
  15. Hello, I found this fossil last spring break, in Coahuila, Mexico. It comes from the late Campanian (73-71 Myrs) Cerro del Pueblo formation. I found several fossils at the same location where I found this fossil. Some of the fossils I found include Cerithium snails, several species of Physidae freshwater snails, Inoceramus sp., petrified wood with teredolites, ammonite fragments, a caudal vertebra from a Hadrosaurid, and plenty of dinosaur bone fragments. The formation is a mess, it’s composed of layers that were deposited in marine, and terrestrial environments, as well as rivers and possibly swamps. Even though I’m very knowledgeable of the formation, and the fossils that have been found there I still have no idea as to what this specimen is. My best guess at the moment is that it’s some type of plant material maybe a fruit or a seed. There have been numerous plant fossils found at the formation, including fruits. I also think this could be embedded in a coprolite, with the rounded object being embedded in it. Let me know what you guys think about it.
  16. Oncoids - Oncolites

    04/13/2020: End of my lock-down. Visited a locality with oncoids-oncolites in the Santonian - Lower Campanian Geistthal-formation (59) of the Gosau-basin of Kainach. Locality is near Kreuzwirt south of Geistthal and was told to my by a friend, so I will keep it secret. This is a specimen from block 1. Most of block 1 is still there, I removed only about 2 kg (2 specimens) of the about 40 kg heavy block. Only two more blocks of this material were found, despite really good outcrops just nearby (with alternations of conglomerates, sandstones and siltsones). There should be a better locality west of Geistthal, but have not found anything there during previous visits. Last but not least some typical landscape of the Gosau-basin of Kainach. Cherry trees etc. are blooming at the moment, but everything was soooo try. But we finally had some rain during last night! Franz Bernhard
  17. Mosasaur or Plesiosaur?

    I found a tooth in Bladen County, NC at a site on the Cape Fear River near Elizabethtown. The site is Upper Cretaceous, and is Upper Campanian in age. It's in the Black Creek Group. I know that the tooth isn't in the best of shape, but hopefully is identifiable. All the Mosasaur teeth I had collected there before are a black color. I noticed this tooth is also curved from side to side. I don't know if it's a Plesiosaur or Mosasaur tooth. Both have been found at this site, but the Plesiosaur is far less common.
  18. Hello forum members! With the new Coronavirus raging across the world, I thought it would be nice to start some kind of advent calendar, using my own Squalicorax collection. Everyday I will post one or multiple Squalicorax teeth from one location. Let's see what ends sooner, my collection or the virus outbreak. I will start with the oldest tooth from the Albian substage and end with the teeth from the uppermost substage; the Maastrichtian. The first one is the oldest and also one of the smallest teeth in my collection. Unfortunately it is so small that the photo's are not as sharp as I would have liked, but I think they are good enough. It is Squalicorax primaevus from the Middle Albian Argiles tégulines of Courcelles, Aube Department, France. See you guys tomorrow, Sander
  19. Hello, I've put teeth here for Id a couple of times and always received a satisfactory answer. I hope you can help me this time too. It is about this Ceratopsidae tooth from the Niobrara Formationn (Wyoming). Unfortunately no fossils of this group are known from this formation and I therefore wanted to ask you if you have any idea what species of dinosaurs the tooth could belong to. The tooth is 1,5cm in size. I hope if you can help me with this! Best regards from Germany!
  20. Ancient Shell Has Revealed Exactly How Much Shorter Days Were 70 Million Years Ago https://www.sciencealert.com/old-shell-reveals-earth-s-days-were-half-an-hour-shorter-70-million-years-ago de Winter, N.J., Goderis, S., Van Malderen, S.J., Sinnesael, M., Vansteenberge, S., Snoeck, C., Belza, J., Vanhaecke, F. and Claeys, P., Sub‐daily scale chemical variability in a Torreites sanchezi rudist shell: Implications for rudist paleobiology and the Cretaceous day‐night cycle. Paleoceanography and Paleoclimatology, p.e2019PA003723 https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2019PA003723 Yours, Paul H.
  21. Dinosaur DNA

    Sorry if someone has already posted this paper, but I have searched TFF and not found it. News story: “Cartilage cells, chromosomes and DNA preserved in 75 million-year-old baby duck-billed dinosaur” Paper: “Evidence of proteins, chromosomes and chemical markers of DNA in exceptionally preserved dinosaur cartilage”
  22. I posted this image in the prep thread and I was widely stated to be an Ichnofossil of infilled burrows. I really don't want to be "that guy" that questions expert opinions, but I'm curious; the burrow seems to have attached branches and areas of tiny "grassy" masses adjacent to it. Could they be crinoid segments/branches and pinnules? I have seen photos of chondrites that have the same kind of appearance. I include 3 of my photos, including one through the eyepiece of my scope, and one internet photo of crinoid pinnules. Thanks. I'll happily accept your opinions, go away now, and not be a pest any further.
  23. My Tyrannosaur research

    Hi I decided to make a post about my main research project right now on Campanian Tyrannosaurs specifically Daspletosaurus. Today I have found something to tell teeth from the Judith River Formation and Dinosaur Park Formation. This could also do with the Tyrannosaurs prey or locality. I found out that Judith River Formation Tyrannosaur teeth serrations are more circular and more round compared to the same time Dinosaur Park Formation Tyrannosaur teeth serrations. The Dinosaur Park Formation Tyrannosaur teeth serrations are more longer skinner and more chiseled like but not like other Tyrannosaur teeth from other areas like T. rex’s teeth serrations. Certain Tyrannosaurs in different areas and times would/could of had unique serration morphology probably dew to there prey. I did this on multiple teeth from the Judith River Formation and Dinosaur Park Formation to strengthen my hypothesis. Any opinions on this topic would be great. I will post more on my research here on this and other topics on the Tyrannosaur/Daspletosaurus. I have been doing research on this Daspletosaurus from the Dinosaur Park Formation and it’s close relatives because it was the first dinosaur fossil I’ve ever found. I’ve liked fossils and dinosaurs since I was 2 but in 2018 I went to Alberta and found my first dinosaur fossil which was a fossil from the Dinosaur Park Formation Daspletosaurus sp. Thats why I have been researching on this topic. The serrations I found on Dinosaur Park Formation Tyrannosaur teeth. The serrations I found on Judith River Formation Tyrannosaur teeth.
  24. Almost 2 weeks ago I went with a small group from the rockhound club up to the Vancouver Island Paleontology Museum and the Courtenay & District Museum to see their fossils. Weather was too crummy to do an actual collecting field trip at any place! I guess it's OK to post pics here. I won't post anybody's face. The lighting and some of the display cases themselves presented problems for photography at both places, besides which it was kind of a whirlwind tour, so these shots are the best I could do. I'd say the poor lighting was the worst thing about both places, but we're dealing with small museums with small budgets here, so I figure that can be excused. First, Graham Beard gave us an informative tour of the VIPS in Qualicum Beach. It is a one-room fossil display, aimed primarily at educating the public, and Graham's tour was likewise, which suited us fine as most of the rockhounds know next to nothing about fossils. I think we all got more out of it than we would have if we'd been left to view it all on our own. He not only explained what was interesting about many of the pieces but also recounted the stories around how some of them were collected or acquired. He started at the 'types of preservation' showcase, which featured a piece from the Appian Way site up toward Campbell River which contains Eocene plants. It had been sliced and peeled to reveal fine cross-section detail of the plants. Several new species have been described from here. If you look closely at the slab leaning at an angle on the stand you can see a sheet partly peeled off: Heteromorphic ammonites from Hornby Island and V.I.: The big dark one in front, I have a piece of the same taxon from Mt Tzuhalem. Mine is missing the crook part but looks identical to the straight part. I thought it was from my mountain until Graham told me it was from up along the Inland Island Hwy near Courtenay. (Nothing to collect there now, as that was when the hwy was being built or widened). It didn't have a label and Graham couldn't remember so I'm still not sure what it's called!
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