New mammal species from the age of the dinosaurs have been discovered, increasing known diversity from that era. http://www.nytimes.com/2015/02/17/s...on®ion=bottom-well&WT.nav=bottom-well&_r=0
There is a species of eutrichonodontid called Repenoramus which was found with a young Psittacosaurus in its stomach... Mammals were not simply innocent victims of dinosaur predation...
That's very cool. It seems likely that mammals were a lot more active and diverse in dinosaur days than the popular view of them portrays. Here is a story about mammals eating dinosaurs: http://www.smithsonianmag.com/science-nature/when-mammals-ate-dinosaurs-129282708/?no-ist
Pretty cool! Not surprised that some of these fossils are coming out of China. Lots of great recent discoveries are from China, and so much of the place is still unexplored. If I went into paleontology I would totally try to study there, ha ha.