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Found 78 results

  1. Just recently purchased one of these teeth for the cheap price of $14 dollars from a seller on ebay. I was wondering if anyone with more experience with fossils than I, could tell me if they believe this tooth to be authentic? The ebay seller has all positive reviews. Thank you.
  2. Hi, I've noticed a lot of talk about the different issues with theropod teeth that originate from the Kem Kem beds on this board, and it reminded me that I had a 'Spinosaurus' tooth in my collection. I bought it when I was a kid, and obviously didn't question it's legitimacy or ID in any way. But now that I'm older and have a lot more experience I noticed some features of the tooth that I find slightly dubious. Firstly is the size, it's small, only around 3cm which doesn't compare to some of the enormous teeth in the dentition of Spinosaurus that I've seen. Secondly is the presence of sandy matrix material around the base of the crown which as I've read on here can indicate restoration, and to me looks quite strange. I was wondering if anyone could help confirm if the tooth does appear to be from a Spinosaurid and whether or not it has been restored/composited in anyway. Thanks, Theo
  3. Picked up this odd little theropod tooth from Kem Kem today. Not sure what it is, the only tooth I've ever seen share these qualities is a Torvosaur Anterior tooth. It's round, only has serrations on distal side. The mesial side is devoid of serrations (not from wear) The tooth is about 3/4" long.
  4. Hello, I was was searching for ceratosaurus teeth for sale when I stumbled upon this tooth. There was no specific ID and I was wondering if TFF could help me ID it properly before I make a move. I was rather intrigued by it. Length: 3mm Time: Late Jurassic Location: Morrison Formation Bone Cabin Quarry Albany County, WY, USA
  5. Hi guys can anyone help with these 6 bones from Kem Kem? @LordTrilobite @Troodon They dont look theropod to me so I'm wondering turtle? Maybe A and D are phalanges? B, C and F humerus (humeruses/humerii, plural? hehe) thanks John
  6. From the album Dinosaur teeth

    Theropod sp. Cretaceous (Aptian-Albian) Elrhaz Formation Gadoufaoua, Tenere Desert, Niger
  7. From the album Dinosaur teeth

    Theropod sp. Cretaceous (Aptian-Albian) Elrhaz Formation Gadoufaoua, Tenere Desert, Niger
  8. I have a 3/8" premax theropod tooth from the Hell Creek formation in Montana, Carter County. Anyone have any ideas whether this is dromaeosaur or tyrannosaur? I know most of the tyrannosaur premax teeth like this do not have serrations, but there are always exceptions. 19 serrations per 5mm.
  9. From the album Dinosaur teeth

    Theropod indet. Cretaceous (Cenomanian) Kem Kem Beds, Morocco Perfect tooth measuring an inch long. Unsure of what type of theropod it is so if anyone has any ideas I would appreciate any input.
  10. Hi Everyone, I'm trying to determine if this tooth does indeed come from a Tyrannosaurus Rex. It's a small tooth which makes a positive ID a little tough, but I'm leaning towards this being a Rex tooth. Can anyone confirm as to whether this is a genuine Rex tooth, or something else such as a Nanotyrannus tooth, or Tyrannosaurid indet? When I asked for photos of the base of the tooth the seller mentioned that he had read @Troodon's post about T-Rex VS Nano teeth too . The base does seem more rounded versus rectangular. Information: Size: 1.1 inches long Formation: Hell Creek Location: Garfield County, Montana (Private Land)
  11. Updated 3/25/17 Although a lot of this has already been posted on a number of topics, I thought consolidation it might prove useful with some additional information. If you're planning to purchase theropod teeth from Morocco's Kem Kem Beds or already have some in your collection check this out. Moroccan theropods are poorly understood and not a lot has been published. Very few articulated skeletons have been found and most are partial and without a skull. There is also lots of mis-information, mostly unintentional, from some dealers but especially online auction sites. Unfortunately these are the most misidentified commercially sold dinosaur fossil around. Please post your interest here on the forum before you buy. Background: The Kem Kem Beds also known as the ‘‘Continental Intercalaire’’ or "Continental Red Beds" is composed of three formations: Akrabou, Aoufous and Ifezouane Formation. The latter two are the dinosaur producing sediments with the Ifezouane being the principal one. They are Cenomanian in age. The attached drawing gives a representation how they lay. The distribution of the different groups of fossils in the Ifezouane Formation can been see in the pie chart below. Dinosaurs make up a small percentage of what is collected. So first lets identify what is known to the best of my knowledge. Theropods that have been described across North Africa (focus on large bodied theropods) Theropods that have been described in Kem Kem: (family) Spinosaurus aegyptiacus * (Spinosaurid) *Some paleontologist believe this species is unique to Egypt and Kem Kem material should be identified as Spinosauid indet. Lots of questions exist over Ibrahim (2014) diagnosis which validated this species. Carcharodontosaurus saharicus (Carcharodontosaurid) Deltadromeus agilis (Neovenatorid) Sigilmassasaurus brevicollis (Spinosaurid) Sauroniops pachytholus (Carcharodontosaurid) Theropods that have not been described from the Kem Kem but isolated teeth exist and have been reflected in scientific papers: Dromaeosaurid sp.? Hendrickx suggested these are actually Noasaurid indet. Abelisaurid indet. Theropod teeth that are sold commercially but no scientific evidence yet to link them to the Kem Kem: Abelisaurus sp. (Not described from North Africa) Rugops sp. (Only described from Niger) Bahariasaurus sp. (Only described from Egypt) Elaphrosaurus sp. (From Jurassic of Tanzania) So what is being sold and what are the issues? Spinosaurid teeth are well understood by both collector and dealers, see photo. Issues are typically associated with restoration and compositing a larger tooth from multiple teeth. Teeth with matrix attached to them are suspect for restoration so be careful. At least two species of Spinosaurids exits and it's currently impossible to determine if they are Spinosaurus or Sigilmassasaurus or ?. Best identified as: Spinosaurid indet. Carcharodontosaurid teeth, those that are compressed and blade like, first photo. Wrinkles by the distal carina are diagnostic to this species. Mesial teeth are fat, slender and look very different (D shaped) (next three photos). Two species currently are described and it's impossible to differentiate between the two. Best identified as : Carcharodontosaurid indet. Theropod indet. There are also intermediate size teeth (1 1/2") that are being sold as Deltadromeus or another theropod. I believe these could be Deltadromeus teeth but until we see scientific evidence this morphology of tooth should be identified as Theropod indet. No skull was found with the holotype or in any other discoveries so we do not know what look like. Carcharodontosaurid serrations Theropod indet. Dromaeosaurus teeth... most all being sold are not, so here is what to look for. Teeth are typically small around 1/2" (1.2cm), recurved and there is a distinct difference in the serrations on both edges. These teeth are suggested by Hendrickx to be from a Noasaurid dinosaur. We currently do not have scientific evidence of a dromaeosaurid in this fauna. Although you see many sellers using the word Raptor next to what they are offering it's unknown if there is a true raptor in the Kem Kem. Abelisaurus teeth... This species does not exist in the Kem Kem but the teeth being sold as that are actually Abelisaurid indet. With new discoveries we can put a real species name to these teeth. These are easily identifiable. The teeth are very compressed, the cross-section is oval at the base, the mesial side is strongly curved and the distal side is almost straight to the base of the tooth, see red lines in the photo. These teeth are typically around an inch long but I've seen them up to 2 inches. These teeth could belong to Rugops since it's an Abelisaurid but we have no scientific information to support that claim. Premaxillary Bottom Line: There are NO theropod teeth in the Kem Kem Beds that you can currently assign to a Genus to, no less a Species.
  12. From the album Dinosaur teeth

    Theropod sp. (largest fragment in Tyrannosaur) Cretaceous (Campanian-Maastrichtian) Aguja Formation Brewster County, Texas
  13. From the album Dinosaur teeth

    Theropod indet. (Neovenator?) Cretaceous (Barremian) Wessex Formation Brook Bay, Isle of Wight, England
  14. From the album Dinosaur teeth

    Theropod indet. Cretaceous (Berriasaian) Chamblanc Quarry Cherves Richemont, Cherves-de-Cognac, Department Charante, France
  15. Are there any theropod dinosaur fossils that can be found in Ontario, Canda that is in a public collecting site that is Legal? examples of theropod dinosaurs: tyrannosaurids, dromaeosaurids, etc.
  16. I'm calling in the Theropod experts for this one! I'm looking for an ID for this vertebrae, or whether the seller's ID is correct, or wishful thinking. The ID/Location information is below and is exactly as it is shown online by the seller. Since there's SoOoOo much conclusive research on Moroccan Theropods this one should be a breeze . Can this vert truly be labeled as anything more than Theropod indet? Currently the seller is labeling this vert as belonging to Rugops Primus. For size reference this vert is 4cm long. I don't own this fossil so I am currently limited to the couple of side view shots provided by the seller. Information: Cretaceous Theropod (Raptor) Tail (Caudal) Vertebra - Rugops primus Tegana Formation, Aptian Kem Kem Basin, Morocco, North Africa Creataceous - 100 Million Years Old
  17. Tyrannosaurus sp? from West Texas. No restoration or repair. 1 1/2".
  18. Hello Everyone, These two items were both collected by me last summer in Eastern Wyoming, Lance Formation (Upper Cretaceous). They come from a productive sandy microsite which also produced material from triceratops, hadrosaur, dromeosaur, fish, amphibian, crocodile, and if I remember correctly, mammal. I found the two claws below, and was looking for opinions on what they might belong to. I searched for a while trying to find the rest of the larger partial claw, but no luck. It may be tough to make out the grooves on that larger partial specimen due to weathering and lighting, but they are there. Any thoughts are greatly appreciated.
  19. The attached photos show a vertebra, probably from a dinosaur (theropod according to a very experienced collector, but no reference given) or crocodile from the Kem Kem beds in Morocco. The bone is 9,5 cm long and 9,0 cm tall. Any help to identify it to family, genus or species will be most appreciated.
  20. This is a Profile on the T.rex that I had written for English and would like to see what you all think and correct me on what is wrong about it! Tyrannosaurus Rex is one of the most famous of all non-avian dinosaurs to ever roam the earth, and is known by the name T-Rex. Well that is an incorrect wording as the correct way to write the animals name is T.rex. Very few people know this and is one of my life dreams to educate people about this. Tyrannosaurus means Tyrant Lizard king. The now outdated view of T.rex being a lizard with poor eye sight and lumbering, is incorrect. In all actuality Tyrannosaurus rex was a warm blooded feather coated bird that could run to 25 miles an hour and actually had the best eyesight the earth has ever witnessed with eye sight over 13 times more clear than a humans. The first clue of this is the fact Tyrannosaurus had front facing eyes, meaning it had perfect depth perception. We know this because of the recreation of the eyes based on the fossil skull, eye sockets, which indicated its eye was the size of a softball. T. rex’s binocular range was 55 degrees which is actually greater than that of a hawk, which is of course renowned for its remarkable vision. Mix this eyesight with a sense of smell better than a bloodhounds, and a complex bird brain, this would be a perfect predator. Tyrannosaurus needed all these advantages as its pray was far from defenseless. Its pray would have included Ankylosaurus, Triceratops and Hadrosaurus which all have hard armor or a thick tail to ram into the predator to hit it off its feet. Tyrannosaurus rex lived in North America about 70-66 million years ago in the Hell Creek formation that leads from Montana to Colorado and branch off into Utah and Canada. During the time of Tyrannosaurus, the Environment of Hell Creek was a flood plain, creeks, swamps and dry forests of conifer trees and ferns that dominated for millions of years. The Swamps were home to many creatures such as crocodiles, fish, lizards, small non-avian dinosaurs, amphibians, mammals and birds. Away from the swamps, you would find dry forests and plains, which had creatures such as Tyrannosaurus, Triceratops, Dakotaraptor, Pachycephalosaurus and an uncountable number of others, not including the thousands of plant and fungi species. Meanwhile giant pterosaurs roamed the sky, and giant marine lizards swam the oceans. All of this was the domain of the mighty Tyrannosaurus rex, an invasive species from Asia that came to America during the early cretaceous period through land bridges and shallow seas. They became the top predator, and knocked other predatory theropod dinosaurs off the throne of Top Predator. Tyrannosaurus, despite popular belief, was covered in soft downy feathers much like emus and ostrich. They only really had scales on the under side of the tail, while their legs and face would have skin like an ostrich leg. They also did not roar, and most likely cooed and/or quacked like a modern day bird. They cared for their young like a mother bird and would defend them from anything. The closest living relative of the Tyrannosaurus is now the Chicken, and it may surprise you to know Chickens can chase, catch and devour mice whole, much like the Tyrannosaurus assumingly. For the very last thing you need to know the T.rex comes from a group of animals called the Tyrannosaurids, this group includes the Dilong, Gorgosaurus, Albertosaurus and Tarbosaurus.
  21. Started reconstructing a Scipionyx for 3d printing Skull complete Skull + Jaw complete Started working on the chest and arms, they are so very small ----- The skull and jaw are available for printing at full size here.
  22. Hi everyone! So I've recently gotten into the Early Cretaceous coastal environment of what was the extended Gulf of Mexico in what's now Texas after finding out about the numerous dinosaur trackways in my area of the state. I've been combing various databases, and I've already visited the trackway up at the South San Gabriel River twice (A very beautiful group of tracks I might add). This morning, I came across something that surprised me. On the database site https://paleobiodb.org/#/ ( a very useful and interesting site that shows various fossil finds on a map), I found that there were supposedly tracks from some sort of theropod (probably the large sort found around a lot of Texas that have been attributed to Acrocanthosaurus atokensis if I was to put my money on one) were found as close to home as Jonestown. Would anyone happen to know any more about this set of tracks? Unfortunately, there is nothing about exact location on the site like GPs coordinates, so all I have to go off of is the specimen number it provides and a name "TMM 43007, Sandy Creek". Thanks for any help anyone can provide!
  23. Possible distal fibula fragment of a theropod dinosaur.
  24. I have heard that dinosaur bones are different in structure. I have some questions. Are all theropod bones hollow including sauropods? And are all ornithischian bones more solid? And can that be tell from a small fragment of bone?
  25. Hi everyone! I have another puzzle for you all! I REALLY appreciate your help identifying these bones, and even though I may never know what they really came from it is so interesting to propose and discuss possibilities. The majority of the bones I found this summer (in Montana) were really odd and hard to identify... They all came from roughly the same 5'x5' spot in the same formation. Anyways, this one is no doubt theropod. It's beautiful with awesome preservation aside from the whole 'missing an entire side' thing. Hopefully you can help me out! Thanks so much! More to come... ☺️ -Lauren P.S. Sorry for the white spots. Had to put it back together and haven't painted yet.