A new specimen of the four-winged dinosaur Microraptor includes fossil stomach contents. What was this little predator’s last meal? Fish!
Xing L, Persons WS IV, Bell P, Xu X, Zhang J, Miyashita T, Wang F, Currie P. 2013. Piscivory in the feathered dinosaur Microraptor. Evolution 67(8): 2441-2445.