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  • *Pseudofossils ( Inorganic objects , markings, or impressions that resemble fossils.)

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  1. 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
  2. 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.
  3. 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.
  4. 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).
  5. 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
  6. 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!
  7. @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
  8. Praefectus

    REMPC M0015

    From the album: Prae's Mosasaurs

    Carinodens belgicus tooth.
  9. Praefectus

    REMPC M0013

    From the album: Prae's Mosasaurs

    Carinodens belgicus - The corn-kernel toothed mosasaur.
  10. 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
  11. 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.
  12. 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.
  13. 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
  14. 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
  15. Archie

    Asteracanthus tenuis

    From the album: Mesozoic Shark Teeth, England

    Asteracanthus tenuis Jurassic, Bajocian Ketton quarry, Lincolnshire 175 mya 14mm (across base)
  16. 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
  17. 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.
  18. 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
  19. 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
  20. Can someone please give me a few scanned pages from Capetta 1987 book ("Handbook on paleoichthyology: chondrichthyes II: Mesozoic & Cenozoic Elasmobranchii" Volume 3E Teeth). I am in India at present and desperately in need of the book basically for Hybodont dentition (Mesozoic) mostly Asteracanthus (strophodus) sp, Hybodus, planohybodus, spenodus, meristodonoides and edaphodon sp. the book is not available anywhere; not even in library. Very expensive, can't buy from abroad. Please help me guys, atleast you may have access to some good library having the book.
  21. IsaacTheFossilMan

    Jurassic Brachiopod

    Heya! These are a couple of brachiopods I have found in the Cotswolds, UK. They are from the Middle Jurassic, and were found encased in oolitic limestone. They are a triangular shape, and, on the first picture, you can see remnants of a hinge. The third picture shows two of these valves. I haven't done any prep on them yet, as I am unaware of their exact shape, and do not want to risk damage to the actual fossil, so there is visible amounts of matrix. If anyone could put me on the right tracks of identification, or perhaps give me a rough ID, I would be very grateful!
  22. Praefectus

    Tyrannosaur Tooth

    Premaxillary tooth EDIT: Changed from Tyrannosaurus rex to Tyrannosaurid indet.
  23. Praefectus

    Indeterminate Tyrannosaur

    Dimensions: CH = 41 mm CWB = 10 mm CBL = 16 mm MC = 18 denticles/5 mm DC = 14 denticles/5 mm DSDI = 1.29
  24. I've always loved living fossils, especially the fish. They are relics of an age long lost, offering us a glimpse of an incredible prehistoric world. Some are enigmas that survived countless extinction events since the Devonian. Others are majestic predators that swam alongside the dinosaurs. Let me present my collection of living fossil fishes from the Mesozoic and before. I will begin with one of the most famous of all - the coelacanth Coelacanth Species: Whiteia woodwardi Age: 252.3 - 251.3 mya | early Triassic Formation: Diego Basin; Middle Sakamena Formation
  25. I was recently reorganizing my fossil collection and thought I would share some pieces I collected during Paleontology field trips in undergrad at Alabama. I'm glad I took thorough notes at the time! The demopolis chalk is a popular formation for finding Exogyra/ostrea/pycnodonte shells and shark teeth. We visited a site in Tupelo, MS many times for surface collecting. Some of the cool pieces I found were many fragments of a mosasaur jaw (top pic, top 2 slots), a Squalicorax kaupi tooth, a scyliorhinus(?) tooth, bony fish vertebrae, and bony fish teeth. I was told the dark fossils
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