Xingxiulong yueorum comes from Massopoda, a big group of sauropodomorph dinosaurs explained in 2007.

The brand-new types is just the 2nd member of the formerly monospecific genus Xingxiulong

Xingxiulong yueorum is identified from Xingxiulong chengi by having a pendant-shaped 4th trochanter with distal termination, an astragalus with nearly straight dorsal margin of the posterior surface area, and pedal digit V with 2 phalanges,” stated Dr. Xiang-Yuan Chen, a paleontologist with the Institute of Vertebrate Paleontology and Paleoanthropology and the University of Chinese Academy of Sciences, and coworkers.

A partial postcranial skeleton of Xingxiulong yueorum was discovered in 2015 near Lufeng city in the Chinese province of Yunnan.

The specimen originated from a sedimentary rock development called the Lufeng Formation.

“The Lufeng Formation is among the most essential sedimentary systems for comprehending the advancement of the Early Jurassic sauropodomorph dinosaurs,” the paleontologists stated.

Xingxiulong yueorum is approximated to have actually reached a length of 8 to 10 m (26-33 feet)– two times the size of Xingxiulong chengi

“Both the 2 types of Xingxiulong have 4 sacral vertebrae, which are normally connected with the late-diverging sauropodiforms and sauropods, recommending a complicated early development within the sauropodomorphs,” the scientists stated.

According to the group, the discovery of Xingxiulong yueorum contributes to the variety of the sauropodomorph dinosaurs from the Lufeng Formation.

“The discovery adds to our understanding of the elaborate patterns defining the early development of sauropodomorphs in Asia,” the authors concluded.

Their paper was released on February 3, 2025 in the journal Historic Biology

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Xiang-Yuan Chen et alA brand-new types of Xingxiulong (Dinosauria, Sauropodomorpha) from the lower Jurassic Lufeng development of Yunnan Province, China. Historic Biologyreleased online February 3, 2025; doi: 10.1080/ 08912963.2025.2458130