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Showing results for tags 'hadrosaurid'.
Found 16 results
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From the album: Hell Creek / Lance Formations
A remarkable dental battery of the hadrosaurid dinosaur, Edmontosaurus annectens. Hadrosaurs had highly sophisticated teeth arranged in these batteries which advanced teeth in a conveyer-belt fashion to replace worn ones. Even the roots of teeth were used once the enameled crowns wore away. This one was in active use and fossilized when the animal died. This battery in particular is special, as it was collected by former forum member Troodon, seen in his "My Jurassic Park" thread here. It comes from a hadrosaur-dominated bone bed. -
From the album: Hell Creek Formation Microsite
A large hadrosaurid (Edmontosaurus annectens) dentary tooth, recovered from a channel deposit in Montana.-
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From the album: Texas Cretaceous Fossils: Dinosaur and Mammal
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From the album: Texas Cretaceous Fossils: Dinosaur and Mammal
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From the album: Texas Cretaceous Fossils: Dinosaur and Mammal
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From the album: Aguja Formation
A shed tooth from a juvenile Hadrosaurid. Their teeth are arranged in dental batteries which like a conveyer belt constantly replace worn teeth. Because these marvels of eating machinery house hundreds of teeth at a time, their worn teeth are fairly common. In addition to being worn by the animal's mastication, shed teeth are often smoothed and tumbled by rivers before they are buried in sediment and fossilized.-
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Haven’t found a hadro tooth quite like this one, with serration type things on the end of it. Wondering if this is because it’s from a particular part of one of the jaws or if it’s a specific hadrosaur species that has this texture. Dino park fm
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From the album: Dinosaurs
Edmontosaurus annectens Hell Creek Fm., Harding Co., SD, USA Partial dental battery Hadrosaurs had the most histologically complex teeth of any animal, with six unique tissues. This allowed for differential wear, creating an ideal coarse surface for grinding plant matter. (Erickson et al. (2012)) -
I've been working on this for a while now. For the longest time I wanted to reconstruct a whole bunch of hadrosaur skulls digitally and also 3dprint them. I started with Amurosaurus riabinini, and now I'm done sculpting and 3D printing it! So here is the result. I've printed it at 1/6th scale (14.5 cm long). And I will be making a whole lot more hadrosaur skulls in the future.
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- amurosaurus
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My last acquisition was this worn teeth of what the seller used to describe as duck-bill dinosaur from the Hell Creek Formation in Montana. In my opinion it does look like some hadrosaurid teeth but I cannot assign it to a single species...
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Here are a couple of dinosaur teeth (tyrannosauroid and hadrosaurid) from Bladen County, North Carolina.
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- appalachiosaurus
- cretaceous
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https://phys.org/news/2019-09-hadrosaur-japan-dinosaur-diversity.html https://www.brightsurf.com/news/article/090519491504/a-new-duck-billed-dinosaur-kamuysaurus-japonicus-identified.html
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Small news from Japan: yesterday, Pr Kobayashi presented at the japanese paleontological society, his work on an hadrosaurid dinosaur found few years ago in hokkaido and nicknamed Mukawa-ryu. According to him, it would be a new species. The 8th new dinosaur species found in Japan. Name will be released soon with the publication. http://www.asahi.com/sp/ajw/articles/AJ201906190084.html
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Left coracoid of a medium sized hadrosaur from the Judith River formation. Both lambeosaurine and saurolophine hadrosaurs are present in the Judith River formation. This coracoid is consistent with the morphology of saurolophine hadrosaurs. The closest match is Brachylophosaurus canadensis.
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Is this dinosaur egg real or a composite?
Wowbnjijdat posted a topic in Is It Real? How to Recognize Fossil Fabrications
Hi guys, It is me agian with the question if the dinosaur egg is real. I whould love to have a dinosaur egg, but because all the fakes out there I really need your opinions It seems really real to me because of the partial other egg on the side. But the inside of the egg looks suspicious so it could be a composite.. Kind regards, JK
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Has anybody figured out the exact systematic placement of Stephanosaurus marginatus? As far as I can recall, the holotype of S. marginatus (CMN 419) consists of bones of the forelimb and the foot as well as fragments of neck vertebrae, teeth, and ribs (disassociated bones cataloged under CMN 419 [including a theropod ischium] were provisionally referred to T. marginatus by Lambe 1902, but were later referred to Lambeosaurus by Gilmore 1924). The two editions of the Dinosauria list Stephanosaurus and its type species as a nomen dubium (probably based on the assessment of Stephanosaurus as gen. et. sp. indet. in Brett-Surman's 1989 thesis), but without comment. As pointed out by Gilmore (1924), Stephanosaurus differs from Gryposaurus notabilis only in that the humerus and radius are almost equally proportional to each other in length (ratio of humerus length to radius length in Stephanosaurus 1:0.953 versus 1:0.881 in Gryposaurus notabilis) and the radius and ulna are larger than those of Gryposaurus. Since mid-late Campanian of Montana and Canada is starting to become crowded with saurolophines belonging to different tribes (Brachylophosaurini, Kritosaurini, Saurolophini) and no edmontosaurins have been found in the Dinosaur Park Formation yet, I'd be curious to see if Stephanosaurus could be its own thing or not.
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