436 million years old fish fossil found in Chongqing

The oldest ever fish fossil found in Chongqing so far was introduced to the public by Chongqing Municipal Bureau of Planning and Natural Resources on March 3. It can date back 436 million years when Chongqing was still an ocean.

This ancient fish was named "Binhai Yongdong fish" or "Yongdongaspis littoralis." Notably, it is the first creature named at the biological rank of family among all the paleontological fossils discovered in Chongqing. Moreover, the discovery also adds a new advanced biological type to the world's archaic fish.

What does a Binhai Yongdong fish look like? What are its life habits? Are there remarkable differences between it with modern fish? Chen Yang, doctoral candidate and senior engineer of the Chongqing Institute of Geology and Mineral Resources, answered these questions.