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Found 15 results

  1. Hello, I lack teeth in my collection from the Bissekty and a number of theropod teeth have popped up on a popular auction site from a seemingly reliable seller. None of them are super special but I am curious if I should pull the trigger or wait for better material? I don't see Bissekty material often and would have trouble doing a proper ID.. Thank you
  2. Here is another piece of my dinosaur collection - this time material from Eurasian countries. Unfortunately don't have any Triassic or Early Jurassic material, so let's begin with Middle Jurassic (Bathonian) of Itat formation, Krasnoyarskyi region, Russia. Theropods are the most common dinosaurs from there, yet their teeth rarely exceed 15 mm in length. Here is my largest one - could be from Kileskus aristotocus, an early Proceratosaurid (ancestor of Cretaceous tyrannosaurs) and the only described dinosaur from this location. Here are a bunch of Kileskus teeth I had before There also likely were more theropod species, similar to contemporary Chinese Dashanpu formation - methriacanthosaurids (equivalent to Sinraptor), megalosaurids and ceratosaurs. Some teeth I have or had that could be megalosaurids due to bulkier shape and finer serrations (all around 1 cm). In addition I have some specimens from diverse herbivores - Stegosaurids Long-necked sauropods (Mamenchisauridae), possible embryonic teeth Heterodontosaurid fang tooth, 5 mm (huge for this species!)
  3. Sauropod maxilla?

    Bought this specimen as a crocodile jaw section a while ago, it is from Turonian of Bissekty formation, Uzbekistan. Teeth were definitely conical, which fits only two groups in that area - sauropods and crocodiles, but recently after looking at some skulls I noticed that it really doesn't fit crocodile skulls - both Alligatorid and Pholidosaurid. What it seems to fit, is a titanosaur sauropod maxilla (Tapuiasaurus macedoi skull on the pictures below). Please confirm if I am imagining things here or (hopefully) not @LordTrilobite @Troodon And an Alligator skull for comparison
  4. Therizinosaur claw

    From the album Dinosaurs and Reptiles

  5. I added this Timurlengia euotoca tooth to my collection. The question I have is this a Tyrannosaur or Tyrannosaurid tooth. I ask that because the serrations are very fine and it's compressed unlike any other Tyrannosaurids I've seen in North America. Thanks
  6. Bissekty jaw section

    I recently bought this 3" jaw section from the Bissekty Formation. The seller had it listed as Turanoceratops. I was a little skeptical since I knew at least one Hadrosaur is found there and small Hadrosaur and Ceratopsian jaw sections I've seen look very similar to me. I also found this exact fossil in another thread (below), where @Troodon said it and several others looked like Hadrosaurid jaws. Is it definitely from a hadrosaur or could it be Turanoceratops? I'm happy either way but would like to know what to label it.
  7. Timurlengia euotica

    Hey all. I saw this tooth online labelled as Timurlengia euotica It probably is,I just wanted to check with you guys,for extra safety. The tooth was found in the Kyzylkum desert, North of the Uzbekistan. Here is the only picture I have. (Front and back of the tooth. Much appreciate it.
  8. Timurlengia eurotica

    From the album Dinosaur teeth

    Timurlengia eurotica Cretaceous Bissekty Formation Dzharakuduk tract-Mingbulak Village, Kyzyl Kum Desert, Navoi Region, Uzbekistan
  9. Here are my Uzbekistan theropod teeth, finally got the displays for them. The tooth in the gem jar in the lower left hand corner is likely a carcharodontosaurid. The teeth in the lower right hand corner have a round base and I'm not sure what they are. However those two teeth do bear a resemblance to Shaochilong. More studying will be required for those two teeth.
  10. undefined fossil from Uzbekistan

    hi everyone. some friend of mine have this specimen in his collection. as he know, it was found somewhere in Uzbekistan. unfortunately, both of us have not enought knowlage to identify this fossil. may be you can help? p.s. may be this articles are useful to identify? https://www.researchgate.net/publication/295113675_Therizinosauroidea_Dinosauria_Theropoda_from_the_Upper_Cretaceous_of_Uzbekistan
  11. Bissekty Tyrannosaur

    From the album Dinosaur teeth

    Timurlengia eurotica Cretaceous Bissekty Formation Dzharakuduk tract-Mingbulak Village, Kyzyl Kum Desert, Navoi Region, Uzbekistan
  12. Tyrannosaurid cladistics

    reasonably new,don't know if it's been posted yet http://www.pnas.org/content/113/13/3447.full.pdf
  13. Dinosaur material from Uzbekistan is becoming a bit more available to the collector. Most of the material being offered for sale are theropod teeth with the occasional claw, see my post from earlier this year. Sauropod material has yet to hit the market but my bet is that will change if there is a profit to be made. A new paper that will soon be published identifies teeth from several countries in Central Asia including Uzbekistan. The material shown below comes from the same towns and formation the theropod material comes from: The Bissekty Formation, Touronian in age from the Kyzylkum Desert. The material is identified as Titanosaurid indet. and has not been assigned to any specific taxon simply because of the lack of diagnostic material. They do comment that vertebrae found in these localities bear affinities to two Chinese sauropods Dongyangosaurus sinensis and Baotianmansaurus henanensis. All of the teeth from Uzbekistan are small, narrow-crowned, 'pencil-shaped' , some with wear facets. Only these type of teeth are know from this region. Scale bars: 1 mm Map of localities were sauropod material was found: Reference: Averianov, A., Sues, H.-D., Review of Cretaceous sauropod dinosaurs from Central Asia, Cretaceous Research (2016), doi: 10.1016/j.cretres.2016.09.006. Doushantuo provide this paper in one of his links, more focused on the Bissekty Fm https://www.researchgate.net/publication/308013044_Sauropod_teeth_from_the_Upper_Cretaceous_Bissekty_Formation_of_Uzbekistan
  14. Theropod teeth from Uzbekistan typically are not seen for sale other than those from Tyrannosaurs. Opportunities always make themselves available so I decided to put a quick post out on those that have had some scientific research. I also think it's cool to see some of these teeth. We are looking at teeth from the Bissekty Formation, Touronian in age from the Kyzylkum Desert from the following two locations Dzharakuduk and Uchkuduk. There are younger and older deposits in this Desert but all of the teeth sold appear to be coming from those two localities. Changes to what is presented here most certainty will occur with continued research, understanding and new discoveries. Bissekty Tyrannosaurid: Tyrannosaurid indet. (in 2016 this was described as Timurlengia euotica) The Tyrannosaur from this locality has yet to be described. Once thought to be Alectrosaurus it is now viewed as a different Tyrannosaur. The Premaxillary teeth may or may not be serrated. They are your typically D shaped tooth. (17.5-27.5 denticles per 5mm) The scale bar represents 1mm. The Maxillary and Dentary teeth are typically very compressed (flattened) and recurved. Both carinae are serrated and have the same size denticles. Crowns can be quite different, some long and blade like others short and more stout. (12-22 denticles per 5mm on distal carina) The scale bar represents 1mm Troodontid: Urbacondon sp. There are three taxa of troodontid dinosaurs recognized from the Kyzylkum Desert. Urbacondon itemirensis from the Cenomanian for the Dharakuduk Fm, an Indeterminate Troodontid from the Khodzhakul Formation and Urbacondon sp from the Bissekty Formation. The teeth are not common and only four teeth have been identified. A premaxillary tooth, anterior dentary tooth and a pair of maxillary or dentary teeth. Quite distinctive easy to identify. Therizinosauroid indet Therizinosaurs are among the most common theropod in terms of skeletal remains found. At least two undescribed taxa are present in the Bissekty Formation. Their teeth are small but easily identifiable. They are found with either conical and lanceolate crowns. The scale bar represents 1mm. Dromaeosaurid: Itemirus medullaris Dromaeosaurid remains are among the least common theropod found in this region. Teeth however are numerous. Like all Dromaeosaurid teeth there is a distinct difference between the size and density of serrations along the mesial and distal carinae. The distal denticles are always much larger. Anterior teeth have the medial carina twist. (3-6 denticles per 1mm on distal carina) If the serrations are identical it most likely is a Tyrannosaur or another Indeterminate Theropod. http://www.sciencedirect.com/science/article/pii/S0195667114001189?via%3Dihub
  15. Your saying did I read the Topic correctly? Uzbekistan? Where is that? Is that a country? Dinosaurs were there? Well yes to all those questions. First: where is it? well its in Central Asia next to Turkmenistan, Tajikistan and Kyrgyzstan. I'm sure that clarifies the locality In case your still scratching your head here is a map of the region On the map all of the Dinosaurs in this post come from the Kyzyl Kum Desert. I highlighted the area on the map with two red lines. The area is quite difficult to collect but if you dare quite productive for Dinosaur fossils and meteorites. Here are a few pictures of the area. No its not me in the pictures I'm not that crazy. The Dinosaurs from this area are poorly understood but there has been some study done in Russia. An excellent paper of this area is: Dinosaurs of Northern Eurasia: New Data About Assemblages, Ecology and Paleobiogeography by L Nessov published in 1995 and then translated into English. Unfortunately I cannot find the paper with the plate so no images. Specifics: Age: Cenomanian - Turonian (94.3-89.3mya) Bissekty Formation in the Kyzyl Kum Desert. Navoi Region My collection will begin with a number of Therizinosaurus hand claws. Most of you may not be familiar with this dinosaur. Its one of the most interesting ones ever to exist and paleontologists are still trying to understand it.. It begins its existence in the early cretaceous as a meat eating predator about 4 meters long and ends its reign at the end of the cretaceous as a giant 10 meter long herbivore with gigantic meter long claws on their hands. Quite a transformation, wish I had some of those claws. Great reference : Therizinosaur : mystery of the Sickle-claw dinosaur by the Museum in Northern Arizona. Only $10 The first group of pictures all all Therizinosaur hand claws. more to follow:
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