Ancient asteroids kept on coming
http://www.nature.com/news/ancient-asteroids-kept-on-coming-1.10504
Dinosaurs were declining before asteroid struck, say scientists
http://www.csmonitor.com/Science/2012/0501/Dinosaurs-were-declining-before-asteroid-struck-say-scientists-video
Triceratops was already on road to extinction before asteroid wiped out...