A carinate bird from the Upper Jurassic of western Liaoning, China

AFTER the publication of the fossil bird null Confuciusorins , additional skeletons of fossil birds have been found by Hou Lianhai, Hu Yaoming, Wang Ping, Gu Yucai and Sun Yutie in the Yixian Formation of Beipiao, Liaoning Province. The new locality is about 3 km southwest of that of null Confuciusorins . Among those specimens were two of null Confuciusorins null and two new birds. A well-developed carina was found on the smallest specimen, a...