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Shown below are 3 different types of dinosaur eggshell, all said to be from the Gaugou Formation in China. The bottom left eggshell is labelled as coming from Dendroolithus, and I am confident in this identification. The other two types are supposed to come from Tarbosaurus bataar (top left) and Oviraptor philoceratops (right) however, and neither of these species are known from the Gaugou Formation, so the question is what they are actually from. Thanks in advance for any suggestions Othniel
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The Black Hills Institute exciting new Oviraptorid discovery this year in the Hell Creek Formation is far far from completion but Pete Larsen has been keeping everyone appraised of its status. Its still mostly in matrix and the arduous task of preparation as just begun. A new species or a new Anzu wyliei skeleton, it looks different. Not as sexy as Tuffs Love T rex skull but scientifically import. Here is a good look at what it takes to extract one of thess raptors. The site a Hell Creek lake deposit Airbraide-airpen outside, slowly making progress to keep the dust down Screening clay filled "mud" collected at the Oviraptorid site and soaked in water for a week. Hoping for bone fragments. The mud is then scooped into a screen Sprayed with water to reduce the clay and mud Slowly the clay breaks down and washes away This is all that's left of 5 gallons of surface scrapings. Hopefully when finished screening the 20 gallons of mud, some bone will be found Cleaned up the tibia-fibula-astragalus-calcanium block with 5 gastralia Working on the Oviraptorid pelvic and neck block. Nice preservation, but some of the matrix is siderite concretion. Airscribe work. Hard tedious work to extract each piece. Lots of skull elements I've circled the lower jaw among skull elements
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Hello, friends, I want to determine the species of this claw from Iren formation, Inner Mongolia? I know that there are oviraptor and potential Troodon in Iren formation. I think it most likely belongs to one of both? I really appreciate if someone can give me some clues.
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Just a quick digital sketch of a freshly hatched oviraptorid that I made today. Had to finish it on my last day of my current job, amongst many other things, so it is what it is. I have some spare time before my next job, so I am hoping to do some more serious paleoart in the next weeks!
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From the album: Skeleton models
Upper cretaceous of Mongolia, mostly handmade using parts of different models, skull sculpted digitally© Jan Frost
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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 to at least know whether or not I can label this to Oviraptoridae indet., possibly Heyuanniinae indet. The original ID is a bit of an odd one, but it might have just been one of the few oviraptorids described at the time. Last I checked, there are now tons of recently described oviraptorid genera in Mongolia and China. The pair of phalanges with supposedly the semilunate carpal attached which I think is the smaller section? I know one of them did have glue in-between them when I lightly smeared it with acetone using a cotton swab. They are associated coming from the same sandstone block, apparently along with other shattered phalanges. Although I don't know if these actually came from the same animal since one looks ever so slightly larger. There is some sort of clump of sand or crystalized piece attached, as well as light beige or cream colored matrix. Not sure if that narrows down a formation, probably not, but I do see a lot of matrix from Mongolia tend to be red-ish color similar to the Kem Kem Beds. Any input is appreciated. There's probably a lesson to be learned here . . .
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