Dinosaurs died out in this geological era that means "middle life"
[DOC] [TLE] Mesozoic era facts, information, pictures | Encyclopedia.com articles ... [PAR] In geologic time , the Mesozoic Era, the second era in the Phanerozoic Eon , 
spans ... Mesozoic essentially means "middle animals" and marked a 
fundamental high ... to rule the Mesozoic Era but non-avian species of dinosaurs 
became extinct as ... Mesozoic era (mzzk) [Gr.,=middle life], major division 
of geologic time... [DOC] [TLE] Geologic Time Scale Fossil Book [PAR] Geologic Time Scale.