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  1. Hey everyone, I am curious to see your largest complete sawfish rostral spines, Xiphactinus sp. teeth, and Enchodus sp. teeth. Here are mine:
  2. Hello everyone, in addition to posting my other topic today, I am going to post this one. With the summer coming to a close, I am preparing to go back to college in Ohio and continue my study of Neuroscience and Mathematics. The rain in Ohio and ID'ing NJ fossils in the ID section often make me lament all of potential NJ hunts I am missing out on because I am at school. So, I thought it would be a good idea to collect micro matrix using a window screen and stock several buckets full of gravel to look through during the semester. Over the last two weeks or so I've had the opportunity to do some
  3. Dear Fellow Forum goers, I intend this to be just a quick trip report. My friend @The Jersey Devil and I decided to do some collecting on what turned out to be a very pleasant day. Both of us were quite tired for some reason and didn't really hunt as intensely as we could have. We both did okay. I found some decent things, but nothing to write home about. Maybe next time. There were many leaves and trees down due to the recent winds. Overall, the experiences we had today 08/06/2020 were pretty good. I hope you enjoy what I found. - Trevor More appealing find
  4. From abstract: Some authors recognize three Caenagnathid genera, others suggest only two were present, and there is considerable disagreement about which specimens are referable to which genus. This study aims to resolve this issue by reviewing the known specimens and using osteohistology, to establish a testable taxonomic framework of Dinosaur Park https://journals.library.ualberta.ca/vamp/index.php/VAMP/article/view/29362
  5. val horn

    tiny piece of jaw

    I was given this very small piece of ?mandibular bone. Any help would be appreciated in id. it is approximately 12-14 mm in length, 4 mm in height and maybe 2 mm on the dental surface from the hells creek formation in montana.
  6. Trevor

    Cimoliasaurus magnus

  7. Every few years we get rewarded with a new dinosaur described from the Lance/Hell Creek Formations. In this crazy year we finally have one. Finally an Alvarezsauridae has been described from the Hell Creek Formation: Trierarchuncus prairiensis. Sorry its paywalled cannot make comments https://www.sciencedirect.com/science/article/pii/S0195667120302469 Here is some info on this very different dinosaur, one of my favorites, including some of my material so you can see what the paper is describing. Far better than what you see in the paper
  8. Dear Fellow Forum members, Lately I have been somewhat frustrated by my dearth of knowledge on the Late Cretaceous deposits and fauna of NJ. I collect the Late Cretaceous of NJ frequently and am seeking a more thorough comprehension of everything related to it. While reading research papers can go far, there is some information that is proving difficult to find or procure. Here I have listed some of the questions that I have come up with, hopefully some can be answered. At the very least, some pointers would be a great start (links to papers, personal experiences, photos specimens
  9. Hi all! The Aguja Formation matrix that I ordered from PaleoTex arrived on June 12th, but I decided to wait until school ended before I began the process of searching it. Well, school ended yesterday so I have begun the process today! My 5 pounds of matrix are currently soaking in a solution of baking soda and water (because the matrix arrived "unwashed"), but while stirring up the squishy contents with my hand, I found the following 3 items that I'd like your input on. Item #1: Could this be a ceratopsian spitter tooth??? @Troodon More to follow...
  10. Dale H

    Ptychodus and others

    Found on 06/06/2020 Post Oak Creek, surface hunting.
  11. DD1991

    New paravian from Patagonia

    A new paper is online that you may find interesting: Matías J. Motta; Federico L. Agnolín; Federico Brissón Egli; Fernando E. Novas (2020). New theropod dinosaur from the Upper Cretaceous of Patagonia sheds light on the paravian radiation in Gondwana. The Science of Nature 107 (3): Article number 24. doi:10.1007/s00114-020-01682-1. The recovery of Overoraptor as sister to Rahonavis in a clade sister to Avialae shows that not all non-pygostylian paravians were unenlagiids. If this phylogenetic placement holds water, then Rahonaviformes Livezey and Zusi, 2007 and Rahonavi
  12. The Amateur Paleontologist

    Need help in identifying problematic fish bone

    Hey everyone Hope you're all doing well! While looking through unprepped/untouched blocks of chalk from last year's fieldwork session in the Late Cretaceous of Møns Klint (Denmark), I found one block that showed a little trace of fish bone. I scraped a bit around it with some dental tools, and managed to reveal the whole fossil. And I'm having quite some trouble identifying it... Could anyone help me? I've included pics and details of the specimen below. Pics: Note especially the 'ridges' in the upper half of the fossil Full detai
  13. A new paper is available online if you're interested: Claudia Inés Serrano-Brañas; Belinda Espinosa-Chávez; S. Augusta Maccracken; Cirene Gutiérrez-Blando; Claudio de León-Dávila; José Flores Ventura (2020). Paraxenisaurus normalensis, a large deinocheirid ornithomimosaur from the Cerro del Pueblo Formation (Upper Cretaceous), Coahuila, Mexico. Journal of South American Earth Sciences. in press: Article 102610. doi:10.1016/j.jsames.2020.102610. Paraxenisaurus constitutes the first record of Deinocheiridae in North America, and it also represents the second ornithomimos
  14. Excellent paper that examines the geology and paleontology of what they call the Kem Kem Group that includes the lower Gara Sbaa and upper Douira formations . I will add that the authors view of the dinosaur assemblage in this fauna does not agree with recent publications from other paleontologists. Great images of croc teeth, dinosaur teeth and claws. It even discusses "that some geographic names are simple errors that gain traction in secondary citations. In a prominent compilation of dinosaur localities, for example, the term “Tegana Formation” was cited for the
  15. A new pterosaur-related paper is available online: David M. Martill; Roy Smith; David M. Unwin; Alexander Kao; James McPhee; Nizar Ibrahim (2020). A new tapejarid (Pterosauria, Azhdarchoidea) from the mid-Cretaceous Kem Kem beds of Takmout, southern Morocco. Cretaceous Research. in press: Article 104424. doi:10.1016/j.cretres.2020.104424. Afrotapejara represents the second non-Alanqa azhdarchoid pterosaur from the Kem Kem beds of Morocco, and niche partitioning could explain the presence of more than one azhdarchoid taxon from the Kem Kem Beds.
  16. The Amateur Paleontologist

    Late Cretaceous marine sites in China

    Hey Would anyone know of Late Cretaceous fossil sites in China that are similar to 'typical' Late Cretaceous marine sites in Europe/North America? Like places where one can find ammonites, sea urchins, shark teeth and mosasaur fossils... Thanks for any help! Christian
  17. Hipockets

    Maastrichtian Pycnodonte sp. ?

    Hello, I have recently found these pycnodontes at a maastrichtian site in SE North Carolina, USA . It is Pee Dee formation. Would anyone know the speices ? The upper valve is rather flat as opposed to concave and has radiant grooves which I have not seen in my research. The lower valves vary from being almost flat on some to a deep dish concave on others. I have attached two different ones. The first picture of each is the upper valve showing the radiant grroves. Second picture is lower valve. Third picture is the hinge area. Fourth picture is an attempt to show the overall contour. Thanks
  18. This was on several twitter paleo pages, posted this morning by several paleontologists. Comments and photos are that of the of North Dakota Geological Survey's Paleontology protection program. 2014 article https://www.theguardian.com/us-news/2014/oct/21/dakota-ducbkilled-dinosaur-home-bismarck This was the old "Dakota" exhibit. It was meant to be temporary. The arm is the piece on the bottom edge. It was previously displayed with the palm up, and this side was not well prepared and wasn't exposed before. This is indeed a portion of "Da
  19. On Saturday Oct 5, Tyrannosaurus rex celebrated its 114 birthday when it was formally named by H F Osborne in his 1905 paper: Osborn, H. F. (1905). "Tyrannosaurus and other Cretaceous carnivorous dinosaurs". Bulletin of the AMNH. 21 (14): 259–265. hdl:2246/1464. Retrieved October 6, 2008. One little known fact was that Albertosaurus sarcophagus was also formally named on the last page of that paper based on this skull.
  20. I try to get out dinosaur collecting twice a year and this year has been very good to me. Here are some quick field shots of SOME of my finds for this fall. I have a big prep job in front of we but I also use someone in Hill City to do some of my complicated work. Sites are in Montana and South Dakota all from the Hell Creek Formation. My Spring trip post have more specifics on the localities. My best find of the trip occurred on day 3 in Montana a complete dentary (lower jaw) with teeth of a Ceratopsian most likely Triceratops sp. The field photo show the jaw with lots of
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