Tongnanlong was a unknown. It lived in the Late Jurassic period and inhabited Asia. Its fossils have been found in places such as Chongqing (China).

All the Tongnanlong illustrations below were collected from the internet. Enjoy and explore:

Tongnanlong was described by the following scientific paper(s):
  • X. Wei, Y. Tan, and S. Jiang, J. Ding, L. Li, X. Wang, Y. Liu, G. Wei, D. Li, Y. Liu, G. Peng, S. Zhang, C. Lao. 2025. A new mamenchisaurid from the Upper Jurassic Suining Formation of the Sichuan Basin in China and its implication on sauropod gigantism. Scientific Reports 15(1)