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Named two new genus and species of dinosaurs, the first dinosaur "Big Mac" discovered in Hami, Xinjiang |
August 12, the nature of its academic journal "Science Report" published online Chinese Kexue Yuan Vertebrate Paleontology and Paleoanthropology other units researchers on the latest research in Xinjiang early Cretaceous pterosaur fossils of dinosaur fauna
.
The researchers studied three dinosaur fossils previously found in the Lower Cretaceous strata in Xinjiang.
Academy of Sciences
"It is a porous vertebral dragon dinosaur Cretaceous strata at Xinjiang in the first report, and it is the first report of non-Hami pterosaur faunas pterosaurs vertebrates
.
" First author and co-corresponding author of Keyuan ancient of the spine Researcher Wang Xiaolin emphasized that the study of China's Silk Road Dragon and Xinjiang Hami Dragon has increased the diversity of Hami pterosaur fauna, and also increased the diversity of China's Early Cretaceous sauropod dinosaurs
Zhong ASTRI ASTRI
The new dinosaurs are named China Silk Road Dragon and Xinjiang Hami Dragon
The new dinosaurs are named China Silk Road Dragon and Xinjiang Hami Dragon The three dinosaur fossils reported this time were discovered in the Lower Cretaceous Tugulu Group Shengjinkou Formation of the Hami Tuha Basin, Xinjiang.
They all belong to the porososaurus in the sauropod dinosaurs, and their lives are about 130-120 million years ago.
Before
.
Due to the long-term exposure of the fossils to the Gobi area with extremely arid and strong wind and sand, the surface weathering was extremely serious.
Only part of the broken vertebrae remained on the three specimens.
Scientifically repaired on the side
.
After repair, the three specimens were 6 associated cervical vertebrae and ribs, 7 associated caudal vertebrae, and a broken sacrum.
The first two specimens were named the Chinese Silk Road Dragon and Xinjiang Hami Dragon
.
"The name comes from the fossil origin and the huge size of this dinosaur.
It represents the discovery of fossils in Hami, Xinjiang, China.
Hami is also an important town on the Silk Road Economic Belt of the'Belt and Road.
' The Silk Road
.
" Wang Xiaolin said
Polysaurus is a group of sauropod dinosaurs that live in the late Jurassic to the late Cretaceous, and its fossils are found on all continents around the world
.
“Most of the polypsosaurus are huge.
Since 2006, Wang Xiaolin led by Zhong Keyuan ancient spine of the Hamilton expedition expedition carried out more than ten years working in Hami Gobi, Hami pterosaur discovered the rare fauna, this region has become the largest distribution area and the world.
The richest source of pterosaur fossils, hundreds of millions of pterosaurs once thrived here.
It is a veritable pterosaur Eden.
It has become the Hami pterosaur-Yadan National Geopark, and is actively promoting the pterosaur site museum.
Construction
.
Wang Xiaolin said that the sauropod dinosaurs studied in this study were the first non-pterosaur vertebrates found in the Hami pterosaur fauna, and they were all produced in the equivalent strata of the Hami pterosaur fossil
.
Phylogenetic analysis confirms the taxonomic position of new dinosaurs
Phylogenetic analysis confirms the taxonomic position of new dinosaurs The Dragon of the Silk Road in China preserves 6 relatively complete cervical vertebrae connected together.
The total length of the 6 cervical vertebrae is about 3 meters, which is the equivalent of the Early Cretaceous Pediatrosaurus Shishiensis discovered in Mengyin, Shandong Province, China with a body length of about 15 meters.
Nearly 2 times the average length of the cervical spine
.
Researchers conservatively estimate that the length of the Chinese Silk Road Dragon is more than 20 meters
Wang Xiaolin said that there is also a broken Hami pterosaur mandible preserved with the Chinese Silk Road dragon, indicating that these large dragon dinosaurs and Hami pterosaurs lived together in the sky and land of the Cretaceous Period
.
The Hami dragon in Xinjiang preserves 7 linked tail vertebrae.
The length of a single tail vertebra ranges from 210 to 320 mm.
It is the average length of the corresponding tail vertebrae of the Late Cretaceous Late Cretaceous Concavetail discovered in Mongolia.
About 1.
5 times
.
Researchers conservatively estimate that the body length of the Hami dragon in Xinjiang is about 17 meters
There is also a theropod dinosaur tooth preserved together with the Hami giant dragon in Xinjiang, which is also the first reported theropod dinosaur fossil in the Hami pterosaur fauna
.
“Because no theropod dinosaurs’ tooth prints were found on the bones of Hami giant dragons in Xinjiang, it is uncertain whether theropod dinosaurs eat giant dragon corpses
The researchers conducted a systematic analysis of the newly discovered polysaurus, and showed that the Chinese Silk Road dragon belonged to the Panpodaurus; while the Xinjiang Hami dragon belonged to the Giant dragon
Wang Xiaolin said that the emergence of two polycone dinosaurs provided new information for the evolution of this dinosaur group, and further proved the wide diversity of the early Cretaceous polyconteosaurus dinosaurs in Asia
(Science and Technology Daily, Beijing, August 12)