"What happened to the dinosaurs? For over a century, paleontologists have been puzzling over the fate of our favorite prehistoric oddities. The non-avian dinosaurs dominated the planet for an inconceivably long period of time, and their evolutionary success only heightens the mystery of their downfall.
Our understanding of dinosaurian demise has changed a great deal since 19th-century naturalists started studying the long lost animals. Today, paleontologists have discerned that most dinosaur lineages disappeared by about 66 million years ago after intense volcanic activity, climate change and a catastrophic asteroid impact triggered one of the worst mass extinctions in our planet’s history. Many forms of life disappeared. Among our favorite prehistoric celebrities, only the avian dinosaurs—birds—were left to carry on the legacy of Velociraptor and kin.
But before our current view came together, the extinction of the non-avian dinosaurs was an open-ended question. Here is a list of some of the stranger—now discarded—theories explaining the loss of our dear departed dinosaurs . . ."
Read Brian's list here.