![](./W020121102618017891179.jpg)
Restoration of Tungsenia paradoxa
![](./W020121102618017905499.jpg)
Digital restorations of endocasts of Tungsenia paradoxa
![](./W020121102618017907724.jpg)
Photo of endocasts and digital restorations of endocasts and endocranial cavity
Tungsenia paradoxa, the earliest known stem-tetrapod from the Lower Devonian (Pragian, ~409 million years ago) of China, extends the earliest record of tetrapods by some 10 million years.