The Triassic is the first and shortest period of the Mesozoic Era and the seventh period of the Phanerozoic Eon. Both the start and end of the period are marked by major extinction events. [10] The Triassic Period is subdivided into three epochs: Early …

Jan 24, 2025 · Triassic Period, in geologic time, the first period of the Mesozoic Era. It began 252 million years ago, at the close of the Permian Period, and ended 201 million years ago, when it was succeeded by the Jurassic Period.

Learn about the time period that took place 251 to 199 million years ago. The start of the Triassic period (and the Mesozoic era) was a desolate time in Earth's history.

Feb 11, 2014 · The Triassic Period occurred between 251 million and 199 million years ago. It was a time when life outside of the oceans began to diversify.

The Triassic Period (252-201 million years ago) began after Earth's worst-ever extinction event devastated life. The Permian-Triassic extinction event, also known as the Great Dying, took place roughly 252 million years ago and was one of the most significant events in …

Apr 28, 2023 · During the Triassic, the first dinosaurs walked on the land, the first pterosaurs sailed through the skies, and the first ichthyosaurs and plesiosaurs swam in the oceans. The lineage of many modern-day reptiles began in the Triassic …

Apr 7, 2014 · The Triassic /traɪˈæsɪk/ is a geologic period and system that extends from about 250 to 200 Ma (252.2 ± 0.5 to 201.3 ± 0.2 million years ago). It is the first period of the Mesozoic Era, and lies between the Permian and Jurassic periods. Both the start and end of the period are marked by major extinction events.

Nov 8, 2018 · The Triassic period: facts & information for kids and adults. Triassic animals, dinosaurs, sea reptiles, fish, insects, continents, oceans, climate & more.

Jan 24, 2025 · Triassic Period - Reptiles, Mammals, Evolution: On land the vertebrates are represented in the Triassic by labyrinthodont amphibians and reptiles, the latter consisting of cotylosaurs, therapsids, eosuchians, thecodontians, and protorosaurs.

The organisms of the Triassic can be considered to belong to one of three groups: holdovers from the Permo-Triassic extinction, new groups which flourished briefly, and new groups which went on to dominate the Mesozoic world.