|  | 
Definition of Jurassic period
1. Noun. From 190 million to 135 million years ago; dinosaurs; conifers. 
Exact synonyms: Jurassic
Group relationships: Age Of Reptiles, Mesozoic, Mesozoic Era
Generic synonyms: Geological Period, Period
Group relationships: Age Of Reptiles, Mesozoic, Mesozoic Era
Generic synonyms: Geological Period, Period



