China’s Yanliao Biota, an assembly of fossils preserved in northeastern China dating from the Middle to Late Jurassic (174 to 145 million years ago), offers an important window into the evolution of vertebrates. With exceptional preservation of insects, feathered dinosaurs and transitional pterosaurs, plus early representatives of salamanders and mammals, the biota is known as a Lagerstätte.
Click here for original story, China’s Yanliao Biota offers a new window into mammal evolution since the Triassic
Source: Phys.org