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The private sale of fossils has attracted criticism from paleontologists, as it presents an obstacle to fossils being publicly accessible to research. [2] Most countries where relatively complete dinosaur specimens are commonly found have laws against the export of fossils. The United States allows the sale of specimens collected on private ...
Fossils of Mamenchisaurus and Omeisaurus have been found in the Shaximiao Formation, dating to the Oxfordian-Tithonian interval, around 159-150 Ma (million years ago). Chuanjiesaurus fossils date between 166.1 and 163.5 Ma, while those of Eomamenchisaurus were found in the Zhanghe Formation, believed to be around 175.6-161.2 million years old. [8]
The fossil site was located in the Junggar Basin, Xinjiang; from the upper part of the Shishugou Formation, making it one of the few mamenchisaurs known from outside the Sichuan basin; [1] [4] [13] the locality is thought to date to around 162.2 million years ago. The location of the quarry the specimen was found in was originally reported as ...
"The sale of Sue was a turning point, I think, [for] the commercial sale of fossils," Spencer Lucas, a curator of paleontology at the New Mexico Museum of Natural History and Science in ...
A fossil preparator handles fossils found in Petrified Forest National Park at the museum's demonstration lab. Visitors are not allowed to take fossils from the park.
Jingiella is an extinct genus of mamenchisaurid sauropod dinosaur from the Late Jurassic Dongxing Formation of Guangxi, China.The genus contains a single species, J. dongxingensis, known from vertebrae and limb bones.
They found the fossils of Tonganosaurus in the middle of the lower part of the Yimen Formation, whose age is estimated on 184.5 Ma. The fossils included about 20 vertebrae, a complete right shoulder blade and right forelimb, a distal left humerus, intact left and right ischia, a left femur, and complete right hind limb, and more than 10 ...
Primitive hadrosauromorph. Its only known fossil specimen found appeared to have been washed into the Western Interior Seaway. It is believed to be from Appalachia because it was found closer to the Appalachia side of the sea and is unknown from Laramidia. "Coelosaurus" Upper Cretaceous: omnivore: May be synonymous with Ornithomimus. Its ...