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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 Tonganosaurus date to even earlier, from the (Pliensbachian) Early Jurassic. [9] The Tendaguru Formation taxon Wamweracaudia from Tanzania extends the geographic distribution of Mamenchisauridae into Africa, [ 10 ] while fossil remains from the Itat Formation in Russia suggest they also reached Siberia. [ 11 ]
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 ...
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 ...
An exact cladistic analysis, part of the 2019 study, showed that Wamweracaudia was placed in the Mamenchisauridae, as a sister species of Mamenchisaurus. The two taxa shared procoelous tail vertebrae. These are also present in the Titanosauria and when the tail was still referred to it, Janeschia had been seen as one of the earliest known ...
Xinjiangtitan shanshanesis is known from a single specimen, the holotype SSV12001, which consists of a nearly complete vertebral column preserved in articulation, as well as a partial skull, partial pelvis, and most of the left hind limb. [1]