Photo of the Day 101

Beipiaosaurus Fossil, China, 1999

Photograph by O. Louis Mazzatenta

The Institute of Vertebrate Paleontology and Paleoanthropology, part of the Academia Sinica in Beijing, houses the fossilized teeth of the dinosaur Beipiaosaurus. The prehistoric reptile lived in the Cretaceous period, about 125 million years ago.

(Photo shot on assignment for, but not published in, "Feathers for T. Rex," November 1999, National Geographic magazine)