- noting or pertaining to a period of the Mesozoic Era, occurring from 230 to 190 million years ago and characterized by the advent of dinosaurs and coniferous forests.
- the Triassic Period or System.
- of, denoting, or formed in the first period of the Mesozoic era that lasted for 42 million years and during which reptiles flourished
- the Triassic period or rock system
