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Mamenchisauridae is a family of sauropod dinosaurs belonging to Eusauropoda known from the Jurassic and Early Cretaceous of Asia and Africa. Some members of the group reached gigantic sizes, amongst the largest of all sauropods.
The fossils were found near a village in Hechuan, north of Chongqing (originally part of the Sichuan Province), China; 200 meters (660 ft) above the Fu River on the slope of a mountain. [10] The M. hochuanensis fossil site also belonged to the Upper Shaximiao Formation, very close to the M. constructus type specimen's location, dating to at ...
A vertebra of Qijianglong was first discovered in the early 1990s by farmer Cai Changming of Heba village, Sichuan, in his backyard.Work at a nearby construction site at Qijiang District uncovered a rich fossil quarry in 2006.
The fossils were collected in the same general area and were proportional, so they were believed to belong to the same animal. Being the first representative of the family Mamenchisauridae implies a high diversity of sauropods in the late Early Jurassic.
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 ...
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.
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.
On the other hand, the caudal vertebral series MB.R.2091.1–30 does not overlap with SMNS 12144 and instead represents the first taxon of Mamenchisauridae from outside Asia, Wamweracaudia. [17] [18] Recent cladistic analysis places Janenschia as a non-titanosauriform sauropod. [19] [18]