Deep Dive: Tongyanlong zhimingyi — The New Giant Sauropod Transforming Our View of Jurassic Asia

In this episode, we unpack the 2025 announcement of Tongyanlong zhimingyi from the Sichuan Basin. We explain how researchers estimate a 23–28 meter long body and 26–28 ton weight from mostly missing skeleton pieces, compare it with close relatives like Mementosaurus, and explore its place in the Mementosauridae family and the Suying Formation ecosystem. We also discuss the broader implications: what this giant sauropod says about sauropod gigantism and a wider, earlier distribution of Mementosaurids beyond East Asia.

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