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  1. siteseer

    Kem Kem tooth Crocodile?

    Here's a tooth I bought at the gem show back in the days when Moroccan vertebrate stuff was starting to appear at Tucson and other shows. I've been meaning to show it to people for years. It's from the Kem Kem Beds (Cenomanian), Taouz area, Morocco. It's about 61mm long with cutting edges that appear to be slightly crenulated rather than finely-serrated. It's oval in cross-section on the root end but the crown becomes blade-like toward the tip so it is somewhat labiolingually compressed. I assume it's a crocodile tooth but thought it might have a small chance at being from a di
  2. siteseer

    Squalicorax review

    This thread was inspired by Sander's excellent review of his collection of Squalicorax teeth. I have started getting some of my Squalicorax specimens together and a few have been photographed already to provide additional visual references for collectors. I will try to show teeth chronologically (Albian teeth first, then Cenomanian...) from early in the evolution of the genus and on to the time of its last representatives. I start with the two oldest Squalicorax teeth in my collection - a pair of specimens from the Upper Albian-age Pawpaw Formation, Motorola site, Tarran
  3. Tales From the Shale

    Browning Cretaceous Fossil Park 2022

    Dug into this park on Tuesday for a few hours. I really have no experience with Mesozoic strata, aside from Coon Creek of Tennesse. The water was inconsistent in it's depth due to a local beaver dam causing higher than normal water levels. Material here consists of unconsolidated clays, gravel and sand. Here are two large bivalves I recovered from the upper beds containing clams. I believe these are Exogyra costata which are common at this location. This tooth belongs to Scapanorhynchus texanus in which the teeth are referred to a
  4. ThePhysicist

    Lungfish tooth plate

    From the album: Triassic

    Lungfish are an ancient group of fish, with swim bladders that evolution co-opted as a kind of "lung," allowing them to breathe air. This may have proven invaluable in a seasonally dry climate in Pangea.
  5. ThePhysicist

    Coelophysoid? Theropod tooth

    From the album: Triassic

    From the "dawn" of the Dinosaurs, this small tooth represents an early theropod. Unlike the other serrated archosauriform teeth present in the formation, this tooth is ziphodont - thin and labio-lingually compresed - the archetypical tooth form that most theropods adhered to since their beginnings.
  6. Just letting everyone that today Lynx edicicons, one of the best publishers of field guides to birds there is coming out with a field guide to Mesozoic birds and anyone who is interested in the topic should keep there eyes open for this book that is probably going to be amazing.
  7. Is the fossil site at Union Wash worth going to? I've read that the site's been depleted of fossils. Is that true?
  8. Praefectus

    Plesiosaurs from the Kem Kem Group

    https://www.sciencedirect.com/science/article/pii/S0195667122001744 Plesiosaurs from the fluvial Kem Kem Group (mid-Cretaceous) of eastern Morocco and a review of non-marine plesiosaurs Georgina Bunker, David M. Martill, Roy Smith, Samir Zourhi, Nick Longrich Leptocleididae indet., shed teeth from the Kem Kem Group, Morocco. Unfortunately paywalled. Send me a message if you want the pre-proof PDF.
  9. siteseer

    New Dinosaur book

    Just a notice about a new book about the extinction of the dinosaurs and other organisms at the end of the Cretaceous, "The Last Days of the Dinosaurs," by Riley Black. I saw it in a local Barnes & Noble yesterday and read the blurb on the book jacket. I didn't get a chance to really leaf through it.
  10. David Joyce

    Searching for age of fossil

    This stone was found 40 years ago in the Santa Fe National Forest in New Mexico. I am trying to date the fossils. I guess it is Cretaceous but I am a newbie.
  11. I was given a fossil vertebrae today and wasn’t given too much info on the origins. All I know is that it was collected in 1919, it’s not fully cleaned, and it’s from western US. It’s around 2 1/2x4x3 1/2 inches but the shape of the front being so weird makes me think that this isn’t the full vertebrae ( either from poor excavation or something having to do with the perseveration of the bone).
  12. Hello! I am student of the biological sciences with an intended minor in geology. I have been collecting fossils for a long time, and am excited to join the forum! I just purchased my first "dinosaur" specimen from an annual fossil show. My collection and interest has always been in Paleozoic invertebrates, so my dinosaur knowledge is extremely limited. The seller said the species was of the Dromaeosaurus genus and the origin was from the well known Hell Creek formation, however I took everything he said with a grain of salt. After reading some previous posts on the forum i've seen that i
  13. madagascar

    Dinosaur femur?Or a spine?

    发现于马达加斯加。 无法确定具体的产地。 它可能来自 Maevarano 组。 是脊椎吗?还是股骨? 感谢您的回答!
  14. @pachy-pleuro-whatnot-odon and I wrote a paper on Mosasaurus hoffmannii fossils from the Moroccan Phosphates. https://www.researchgate.net/publication/357836567_Occurrence_of_Mosasaurus_hoffmannii_Mantell_1829_Squamata_Mosasauridae_in_the_Maastrichtian_Phosphates_of_Morocco https://www.aaps-journal.org/pdf/JPS.C.22.0001.pdf Abstract: Marginal tooth crowns from the hypercarnivorous marine reptile Mosasaurus hoffmannii Mantell, 1829 are reported for the first time from the Late Cretaceous (Maastrichtian) phosphates of Morocco. Fossilized remains of this speci
  15. Praefectus

    REMPC M0015

    From the album: Prae's Mosasaurs

    Carinodens belgicus tooth.
  16. Praefectus

    REMPC M0013

    From the album: Prae's Mosasaurs

    Carinodens belgicus - The corn-kernel toothed mosasaur.
  17. In the September 2021 issue of "Natural History" magazine, there's an article, "The Trans-Saharan Seaway," by Devin Reese, Robert V. Hill. and Leif Tapanila. Anyone who collects fossil shark teeth knows Morocco and other parts of northern Africa were submerged by an inland sea as recently as the early-middle Eocene but there was also an arm of the sea that cut south all the way from what is now Algeria to what is now the Gulf of Guinea. The article summarizes the work of a team of geologists and paleontologists across a ten-year period in the early 2000's. It reviews a number of fossil find
  18. Hovestadt (2018) published a revision of extinct bullhead sharks, erecting three new genera (Procestracion, Palaeoheterodontus, Protoheterodontus) for a number of Mesozoic bullhead sharks from the Jurassic and Late Cretaceous of Europe. However, I have not been able find a full text PDF for this publication, so I wanted to ask if anyone could send me a copy of that publication. Hovestadt, D.C., 2018. Reassessment and revision of the fossil Heterodontidae (Chondrichthyes: Neoselachii) based on tooth morphology of extant taxa. Palaeontos. 30: 1–73.
  19. I purchased these as Ingenia yanshini which I think became Ajancingenia, which then became and is currently Heyuannia. The formation provided is the Djadochta Formation, but that doesn't seem right since Ingenia/Heyuannia is not found there as far as I've checked. Unfortunately, there isn't provenance other than Mongolia attached to them to say whether they come from the Barun Goyot Formation where Heyuannia yanshini is found. While I'm not necessarily doubting the original ID, I just don't really know. I'm not expecting a positive or diagnostic ID to the genus level, but I wanted
  20. pachy-pleuro-whatnot-odon

    Marine reptiles of Madagascar

    Hi all, I recently became aware that Madagascar appears to have a fully developed and interesting Mesozoic marine reptile record, yet am not particularly able to find any information on them. The only article I have come across is Bardet and Termier, 1990, "Première description de restes de Plésiosaure provenant de Madagascar (gisement de Berere, Campanien)". However, I've been unable to track this article down. As such, I was wondering whether anybody on TFF might have any information on them. Basically, I'm starting from scratch, so would be very interested in the clades of
  21. Archie

    Asteracanthus tenuis

    From the album: Mesozoic Shark Teeth, England

    Asteracanthus tenuis Jurassic, Bajocian Ketton quarry, Lincolnshire 175 mya 14mm (across base)
  22. Hi all, I visited Aust Cliff in South Gloucestershire, UK for a couple of hours last week. I wasn't expecting much as I know how heavily collected it is, but got a few bits of interest which I was happy with under the circumstances. I'd be interested in educated takes on a couple of bits of bone bed I found there at least, especially this first piece that contains what I believe to be multiple bone fragments as well as coprolite pieces and lots of small black fragments - not sure if scales, teeth or what. Here's a view showing what I imagine is one end of a reptile limb bone - coul
  23. Greetings good people of the fossil forum... I stand before you all this afternoon to let you know of an event happening at the Tate Geological Museum in Casper, Wyoming on June 4-6. Yes, it is the 26th annual Tate Conference! The theme this year is Marine Reptiles. We have speakers from all over the map (including a few virtual folks speaking form Europe), talking about mosasaurs, ichthyosaurs, plesiosaurs, sea turtles and even Tanystropheus (one of my personal favorites). Talks will be here on the Casper College campus and will be all day on Friday the 4th.
  24. Microraptorfan

    Mesozoic Gars

    I thought I would ask here, do any of the members here have Mesozoic gar fossils in their collection, im not looking to buy them, more wanting to see the range of Mesozoic fossil gar material owned by members here
  25. Hello everyone, Some time ago I was talking about a gastropod fossil with an individual online who thought that it was an ammonite, During this conversation one thing was brought up that I have wondered about for a long time but have not actually been able to answer, and that is what exactly do we consider an ammonite? I have always thought that ammonites are the cephalopods with an external shell containing complex sutures which occur throughout the Mesozoic, but people have pointed out that certain sites talk about ammonites going back to the Devonian. I have always thought t
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