“Everyone loves a giant dinosaur. But we decided to look at the other end of the scale. The absence of tiny dinosaurs may be just as interesting as the existence of giant ones.”

Science Daily · Aug 8 · Study: Early mammals blocked dinosaurs from evolving tiny body sizes

“We already knew that dinosaurs prevented mammals from evolving to large sizes before the end-Cretaceous mass extinction. Here we suggest that mammals in turn prevented dinosaurs from evolving to small sizes.”

Science Daily · Aug 8 · Study: Early mammals blocked dinosaurs from evolving tiny body sizes