乔治•华盛顿大学的布莱恩•列治文和他的科学考察小组于2009年在干旱的泥土下面发现了这些珍贵的化石。

A team of scientists, including Brian Richmond from George Washington University, discovered these precious fossilized prints in dried mud in 2009.

youdao

乔治•华盛顿大学的布莱恩•列治文和他的科学考察小组于2009年在干旱的泥土下面发现了这些珍贵的化石。

A team of scientists, including Brian Richmond from George Washington University, discovered these precious fossilized prints in dried mud in 2009.

youdao