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  1. The Amateur Paleontologist

    Hokkaido ornithopod prepwork finished!

    Preparation of 'Mukawaryu', a nearly complete ornithopod skeleton, has been completed! The specimen is originated from the marine Yezo Group of Hokkaido (Japanese island), a location/rock unit famed for numerous heteromorph (uncoiled) ammonites. http://www.geologypage.com/2018/09/japans-largest-complete-dinosaur-skeleton-comes-to-life.html Now research of this fascinating dinosaur specimen can finally begin! -Christian
  2. DD1991

    New nodosaur from New Mexico

    A new ankylosaur-related paper has appeared online: Andrew T. McDonald; Douglas G. Wolfe (2018). A new nodosaurid ankylosaur (Dinosauria: Thyreophora) from the Upper Cretaceous Menefee Formation of New Mexico. PeerJ. 6: e5435. doi:10.7717/peerj.5435. Invictarx is the newest addition to a growing inventory of nodosaurid ankylosaurs from the Coniacian-early Campanian of western North America, but is the first to be found in terrestrial deposits in that interval, because Niobrarasaurus, Acantholipan, and Hierosaurus have been found in marine deposits.
  3. TyBoy

    Theropod Teeth ID's Check

    I believe I know the answers but like to confirm the ID's and raise a red flag if appropriate. Seller is offering the following from the Judith River Formation of Montana Saurnitholestes Tooth 1/4" Aublysodon Tooth 3/4" Daspletosaurus tooth 1.4" Daspletosaurus tooth 7/8"
  4. Sphenodiscus lenticularis ammonite From the late Cretaceous, Maastrichtian stage Fox Hills Formation, South Dakota I bought this at auction very cheap. The seller did not know what it was.
  5. The Aguja micro vertebrate assembladge is quite diverse. I've attached a few of my finds some identified some misidentified , some unknown . Lots still to identify and photograph so I will keep adding to this topic. Apologize for the quality of photos need to invest in a better digital scope to obtain crisper photos of these tiny specimens. Material is Campanian in age from Texas Dinosaurian Actinopterygii Additional Teeth Amiid Fish Tooth Below, Lepisosteid Tooth To
  6. I see a tooth being sold as Aublysodon and the seller also states it could be another juvenile tyrannosaurid My understanding is that this is not a valid species correct. Tooth is around 1/2 "
  7. ANDREW KLINE

    Possible Vertebrae

    Was just in the Ramanessin Brook today looking for shark teeth and stumbled upon this interesting fossil. I have never seen anything like this. Could it be a possible vertebrae from a marine mammal or late Cretaceous marine species?
  8. The Dino Project is a scientific, educational and cultural unit of the National University of Comahue and aims to rescue from the rock all the dinosaurs and other animal and plant remains that inhabited the Barreales Lake area 90 million years ago. This is the only Earth Ecosystem of the Upper Cretaceous of South America and it is considered a hole in Geological time to see the past. The field work involves the extraction, preparation, study and exhibition of the fossils found in the same site. On the other hand, it is an objective of the project to disseminate this activity at all levels of s
  9. The Jersey Devil

    Batoid or Squatina Vertebra?

    Hey everyone, I would like your opinion on this interesting vertebra (from the NJ Late Cretaceous). I identified it a long time ago as a first cervical vertebra from either a ray or an angel shark. An expert looked at some pictures and thinks it is a batoid first cervical vertebra. Sorry about the picture quality, these are old photos. Thanks for any help!
  10. Dear Guys, I recently photographed these small reptile teeth with maximum contrast and got quite good pictures. They are already sent to dinosaur specialist but until I wait for an answer I would like to dicuss about these finds judging by better picture qualities. The first tooth from three sides (2.7 mm length):
  11. D.N.FossilmanLithuania

    Unidentified reptile tooth 1 cm length Lithuania

    Dear Guys, I recently prepared one bigger tooth I have found in flint erratic, it is 1 cm length, crimson and little curved with blunt upper end unusual to shark. The edges are little serrated but I wouldn't expect dinosaur. However, I think it is also not from bony fish and the serrations look more reptile like. Plesiosaurs and elasmosaurs have quite rounded cross section in teeth, so maybe it is from Pachyvaranus, etc.? Any idea what is this? Best Regards Domas
  12. D.N.FossilmanLithuania

    Mosasaur tooth from South Lithuania?

    Good evening Guys, Today I splitted some flint erratics in gravel and except some fish remains founde this tooth. It is straight in sculpture, 5 mm length, serrated edges are not visible and its vertical groove texture is irregular what makes me think it does not represent fish. I would say it is baby mosasaur or very small mosasaur species, but I want to find out which taxon would be the most correct for this find. If you see features typical to known reptile or other vertebrate group, please let me know. Any help will be appreciated! Best Regards Domas
  13. BigJim2500

    ID: Large Dinosaur Caudal Vertebra

    I just bought a large, fairly well preserved vertebra from a rock shop in Tucson. It was found in the Aguja Formation in Texas, a formation that isn’t especially well researched. My diagnosis is that the vert is most likely theropod, and the only theropod that large that is in the area and comes to mind for me is the Acrocanthosaurus. This diagnosis is leaving me skeptical. Acro bones are pretty rare to my knowledge (there are only 5 articulated specimens discovered as of now), and I don’t see any documentation of them being found in Aguja, though as I said before it is not well researched. My
  14. Hello! I found a mysterious fossil bone while looking for shark teeth in NE Mississippi this past weekend. I believe it is from the Eutaw Formation which is Late Cretaceous. This bone appears to be complete, although maybe a bit creek-worn. It is as hard as a chert creek rock with visible minerals present in the pores. Size is 2.75" long, by 2" wide, and around 1.5" thick (including the arches on the other side). I have not studied vertebrates, and have no idea how to technically describe bones, but it looks like the largest surface is a ball (like a ball/socket) and there are two areas on eit
  15. FossilDAWG

    Cretaceous tooth

    Last Sunday I stopped at an outcrop of the Maastrictian (late Cretaceous) Prairie Bluff Chalk in western Alabama. About 3 meters below the top of the formation I encountered this tooth. It was definitely in situ, I had to chisel it out. It's 2.1 cm long, 1.6 cm wide at the base, and 0.7 cm thick at the base (so quite flat). Despite some cracking the tooth is not distorted, it is actually flattened not compressed during fossilization. One face is almost flat, and the other is curved. Both sides are serrated until very close to the tip; there are 5-6 serrations/mm. I have an idea of what
  16. A very rare new discovery: The North Carolina Museum of Natural Sciences reported today that a clutch of oviraptorosaur eggs was found in the San Rafael Swell of Utah. It was a first for the North American continent since these ars typically found in Asia. NC Museum release with video http://naturalsciences.org/calendar/news/rare-dinosaur-eggs-discovered-by-n-c-museum-of-natural-sciences-paleontologist/ @HamptonsDoc @-Andy-
  17. Jaimin013

    Tyrannosaurus Rex Tooth? ID

    Hi everyone, I am new to fossils and have got hold of a Tyrannosaurus Rex from someone I know. The tooth was found in Hell Creek Formation, Faith, South Dakota USA and is 2.5 inches in length and the teeth itself is really heavy (pics attached). Let me know if you need me to take clearer photos of serrations as it is quite hard as my camera's macro focus doesn't work very well. As you can see from the pics this teeth has some surface wear to the enamel and serrations... Serrations worn may have been from feed wear. Please can you help me identify if its from the Tyranno
  18. A very brief article about the "Chicken from Hell" Anzu wyliei found in the Hell Creek Formation. Added some of my photos to get a better view of this cool Dinosaur. Carnegie Museum Article http://carnegiemuseumnaturalhistory.tumblr.com/post/165688152585/anzu-wyliei-perhaps-better-known-by-its-colorful/amp?__twitter_impression=true 5 feet high at the hips. Hand Claws reached 7 inches long
  19. Documented in this paper is baby hadrosaur that represents the first occurrence of an articulated nestling dinosaur skeleton from the latest Cretaceous (late Maastrichtian) of North America. It's from the Hell Creek of Montana, Garfield County. Edmontosaurus annectens Red... Scapula Purple.. Vert column Green..Pubis Blue.. Femur & Tibia Journal of Vertebrate Paleontology. ....Paywalled for non members.. A nestling-sized skeleton of Edmontosaurus(Ornithischia, Hadrosauridae) from the Hell Creek Formation of
  20. Looks like students of UNLV found bones of dinosaur which are now being studied by the Las Vegas Natural History Museum. The bones appear to be that of a hadrosaur and if named would be a first for Nevada News report attached and check out video in that report http://news3lv.com/news/local/new-dinosaur-species-discovered-in-valley-of-fire
  21. D.N.FossilmanLithuania

    Bird bones in flint- please help to confirm

    Dear Guys, I recently collected three examples of interesting small bones that have the cavities in the same area, I found them in flint erratics of South Lithuania. One scientist (Jens Koppka) told be that one time the occasional bird bone in flint was found by his colleagues in Lithuania. I recenly found the link with very similar shape of bone known as Enantiophoenix in the middle picture of one publication that I share with you now : https://peerj.com/articles/1032/ Open this link and look for "Comparison of scapulocoracoid between the dromaeosaurid Balaur a
  22. Arizona Rex

    dinosaur vertebrea

    Hello, I came across this piece in a rock/fossil shop during a recent road trip. It was labeled as unidentified dinosaur vertebrae - late Cretaceous 66 million years ago - from the Fort Crittenden Formation in Arizona. I bought it because it's an interestingly shaped piece - any thoughts or ideas? Neck, tail, or back? Thank you for your help.
  23. Dpaul7

    Inoceramus Bivalves 1 side a.JPG

    From the album: MY FOSSIL Collection - Dpaul7

    Inoceramus Bivalves SITE LOCATION: West Point, Nebraska, USA TIME PERIOD: Late Cretaceous (75-100 Million Years Ago) Data: Inoceramus (Greek: translation "strong pot") is an extinct genus of fossil marine pteriomorphian bivalves that superficially resembled the related winged pearly oysters of the extant genus Pteria. They lived from the Early Jurassic to latest Cretaceous. The taxonomy of the inoceramids is disputed, with genera such as Platyceramus sometimes classified as subgenus within Inoceramus. Also the number of valid species in
  24. Dpaul7

    Inoceramus Bivalves 1 side a.JPG

    From the album: MY FOSSIL Collection - Dpaul7

    Inoceramus Bivalves SITE LOCATION: West Point, Nebraska, USA TIME PERIOD: Late Cretaceous (75-100 Million Years Ago) Data: Inoceramus (Greek: translation "strong pot") is an extinct genus of fossil marine pteriomorphian bivalves that superficially resembled the related winged pearly oysters of the extant genus Pteria. They lived from the Early Jurassic to latest Cretaceous. The taxonomy of the inoceramids is disputed, with genera such as Platyceramus sometimes classified as subgenus within Inoceramus. Also the number of valid species in
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