- 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.
- Also Tri·as [trahy-uh s] /ˈtraɪ əs/ the Triassic Period or System.
Origin of Triassic
Examples from the Web for triassic
No sir, not one, and I can find no sign of the Triassic period.
Now my theory is, you 're in strata here of what we call the Triassic Age.Joy (First Series Plays)
It is further agreed that the Triassic strata were deposited after these.Mr. Gladstone and Genesis
Thomas Henry Huxley
From Prototheria to something like the Theromorpha at the bottom of the Triassic strata.The Last Link
The primitive-looking Notidani do not appear before the Triassic.A Guide to the Study of Fishes, Volume 1 (of 2)
David Starr Jordan
- 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 or Trias the Triassic period or rock system
Word Origin and History for triassic
1841, from German, coined 1841 by German geologist Friedrich August von Alberti (1795-1878), from Greek trias "triad" (see triad), because it is divisible (in Germany) into three groups.
- The earliest period of the Mesozoic Era, from about 245 to 208 million years ago. During the early part of the Triassic Period the supercontinent Pangaea was located along the equator; by the end of the Triassic it had started to split up. Land life diversified in the Triassic in response to the mass extinctions of the end of the Paleozoic. Conifers, cycads, marine reptiles, dinosaurs, and the earliest mammals first appeared. See Chart at geologic time.