A new eusauropod (Dinosauria, Sauropodomorpha) from the Middle Jurassic of Gansu, China by Li Ning, Zhang Xiaoqin,Ren Xingxing,Li Daqing and You Hailu ISBN 101038/S41598025032105 instant download

A new eusauropod (Dinosauria, Sauropodomorpha) from the Middle Jurassic of Gansu, China by Li Ning, Zhang Xiaoqin,Ren Xingxing,Li Daqing and You Hailu ISBN 101038/S41598025032105 instant download

and have been found on all continents1,2

. Due to the global warming event in the late Early Jurassic, eusauropods

were the only surviving sauropod lineage subsequently1,3,4

. In the Middle and Late Jurassic, the non-neosauropod

eusauropod became dominant, represented by Shunosaurus, Omeisaurus, and ‘core Mamenchisaurus-like

taxa’(CMTs)5,6

. Shunosaurus comes from the Middle Jurassic Lower Shaximiao Formation, Sichuan Basin,

China7,8

. Omeisaurus has 8 species, which are from the Upper Jurassic, Sichuan Basin, China9–15. Gansu

Province is one of the earliest and richest areas where dinosaurs have been found in China. However, most

discoveries of Gansu’s Sauropodas dinosaurs are neosauropods from the Early Cretaceous, such as Gobititan

shenzhouensis (Titanosauriformes)16, Huanghetitan liujiaxiaensis (Titanosauriformes)17, Daxiatitan binglingi

(Titanosauriformes)18, Qiaowanlong kangxii (Brachiosauridae)19 and Yongjinglong datangi (Titanosauria)20.

In 2017, Dr. Li Daqing and his team discovered a new vertebrate assemblage including dinosaurs, plesiosaur,

and chelonian remains from the Middle Jurassic Xinhe Formation in Jinchang City, Gansu Province21. Most

reports of Mamenchisauridae are from the Sichuan Basin and Dianzhong Basin (Middle-Upper Jurassic)22,

China, represented by Mamenchisaurus (7 species)23–29, Chuanjiesaurus3,30, Xinjiangtitan31–33, Hudiesaurus34

and Klamelisaurus5

. Besides, Wamweracaudia comes from the Late Jurassic Tendaguru Formation of Tanzania,

which represents a non-Asian representative of Mamenchisauridae6

.

The complete skulls are rarely in non-neosauropod eusauropods due to their fragility, represented by

Shunosaurus7,35, Omeisaurus maoianus13, Omeisaurus tianfuensis10, Mamenchisaurus youngi24, Nebulasaurus36,

Mierasaurus37 and Turiasaurus38. Here, we describe a new eusauropod represented by a partial skeleton with

a nearly complete skull. This is not only a rare non-neosauropod eusauropod in Gansu Province, but also the

earliest sauropod found in Gansu Province