Mei was a troodontid found in the Yixian Formation of Liaoning, China. It lived in the Valanginian age of the Late Cretaceous, about 125 million years ago, and is known from a juvenile specimen. This juvenile was about 53 centimeters long and was preserved in amazing detail in a roosting position similar to modern birds, indicating similarities in behavior between non-avian dinosaurs and birds. It was probably buried instantly in volcanic ash and had very large nares. It was featured in the fantastic television series Prehistoric Park (that was cruelly short) when it both attacked a member of the documentary crew and was soffocated by toxic gasses from the volcano.