Jingiella is an extinct genus of mamenchisaurid sauropod dinosaur from the Late JurassicDongxing Formation of Guangxi, China. The genus contains a single species, J. dongxingensis, known from vertebrae and limb bones. The original description of Jingiella referred to it using the name "Jingia" which was preoccupied by a moth genus named in 1983, and an amendment was published shortly thereafter, establishing Jingiella as the new replacement name.
In 2024, Ren et al. proposed "Jingia" dongxingensis as a new genus and species of mamenchisaurid sauropod based on these fossil remains. The generic name, Jingia, was intended to honor Chinese people of the Jing Nationality who emigrated from Vietnam. The specific name, dongxingensis, references the type locality in Dongxing City, where many Jing people live.[1] The genus name "Jingia" was preoccupied by a moth described in 1983.[2] As such, a replacement name was needed. Ren et al. published an addendum shortly after the original description, amending the error and establishing Jingiella as the new generic name.[3]
Description
Jingiella exhibits a combination of characteristics of more basal, Omeisaurus-like mamenchisaurids and more derived, Mamenchisaurus-like mamenchisaurids. The neural arches of the dorsal vertebrae are relatively tall and narrow, with a neural spine height approximately 4.4 times their minimum width, more similar to Mamenchisaurus than Omeisaurus. The caudal vertebrae are amphicoelous, as in Omeisaurus and most other basal eusauropods, with distinctly concave anterior faces and shallowly concave posterior faces, unlike the procoelous caudal vertebrae in Mamenchisaurus.[1]
1 2 3 4 Ren, X.-X.; Wang, X.-R.; Ji, Y.-N.; Guo, Z.; Ji, Q. (2024). "The first mamenchisaurid from the Upper Jurassic Dongxing Formation of Guangxi, southernmost China". Historical Biology: An International Journal of Paleobiology. 37 (3): 465–478. doi:10.1080/08912963.2024.2309287.
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