FIGURE 12.1. (A) The famous specimen known as “Dave” or more formally, Sinornithosaurus, a feathered
nonflying dinosaur from the Lower Cretaceous Liaoning beds of China. (B) Reconstruction of Sinornithosaurus
in life. (Photo and drawing courtesy M. Ellison and M. Norell, American Museum of Natural History)
(A) (B)