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 …

2025年3月28日 · 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.

2014年2月11日 · The Triassic period was the first period of the Mesozoic era and occurred between 251.9 million and 201.3 million years ago. It followed the great mass extinction at the end of the Permian 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.

2023年4月28日 · 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 …

2012年10月30日 · Triassic* flora and fauna differ significantly from the Permian biota lost to the greatest extinction event of the Phanerozoic Eon. The differences in Permian and Triassic biota are so great that they also mark the transition between the Paleozoic and the Mesozoic Eras.

2014年4月7日 · 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.

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 …

The Triassic is the first geological period in the Mesozoic era and the seventh period of the Phanerozoic eon. It lasted 50.6 million years. The period began 251.9 million years ago, and ended 201.3 million years ago.

Triassic Period, Interval of geologic time, c. 252.2–201.3 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 …