Triassic system

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• Triassic Period — Interval of geologic time, с 248–206 million years ago, that marks the beginning of the Mesozoic Era. Many new vertebrates emerged during the Triassic, heralding the major changes that were to occur in both terrestrial and marine life forms… …   Universalium

• Triassic — Geological period from=251 middle=225 to=199 o2=16 co2=1750 temp=17The Triassic is a geologic period and system that extends from about 251 to 199 Ma (million years ago). As the first period of the Mesozoic Era, the Triassic follows the Permian… …   Wikipedia

• Middle Triassic — System Series Stage Age (Ma) Jurassic Lower Hettangian younger Triassic Upper …   Wikipedia

• Triassic — adjective Etymology: International Scientific Vocabulary, from Latin trias triad; from the three subdivisions of the European Triassic more at triad Date: 1841 of, relating to, or being the earliest period of the Mesozoic era or the corresponding …   New Collegiate Dictionary

• Triassic — /traɪˈæsɪk/ (say truy asik) adjective 1. relating to the geological period or system that constitutes the earliest principal division of the Mesozoic era. –noun Also, Triassic era. 2. the period or system characterised by widespread land deposits …  

• Triassic — /truy as ik/, Geol. adj. 1. 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. See table under geologic time. n. 2. Also, Trias… …   Universalium

• Triassic — Tri•as•sic [[t]traɪˈæs ɪk[/t]] adj. 1) gel noting or pertaining to a period of the Mesozoic Era, occurring from 230 million to 190 million years ago and characterized by the advent of dinosaurs and coniferous forests 2) gel Also, Tri•as [[t]ˈtraɪ …   From formal English to slang

• Triassic — adj. & n. Geol. adj. of or relating to the earliest period of the Mesozoic era with evidence of an abundance of reptiles (including the earliest dinosaurs) and the emergence of mammals. Usage: Cf. Appendix II. n. this period or system. Etymology …   Useful english dictionary

• Permian–Triassic extinction event — …   Wikipedia

• Karoo System — ▪ geological system, Africa also spelled  Karroo        geologic system of rocks outcropping over a 1,560,000 square kilometre (600,000 square mile) area of Africa from the Equator south to the Cape of Good Hope. The time span of the Karoo System …   Universalium

• Pacific mountain system — ▪ mountains, North America Introduction  series of mountain ranges that stretches along the Pacific coast (Coast Ranges) of North America from northern British Columbia (Canada) to northwestern Mexico. They run for some 4,500 miles (7,250… …   Universalium