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The Early Triassic is the oldest epoch of the Mesozoic Era. It is preceded by the Lopingian Epoch (late Permian, Paleozoic Era) and followed by the Middle Triassic Epoch. The Early Triassic is divided into the Induan and Olenekian ages.
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.
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 Triassic, Middle Triassic and Late Triassic.
The Triassic was the first period of the Mesozoic Era. Discover what animals lived in the Triassic Period, which were the first dinosaurs and what prehistoric plants they lived alongside. What was life like during the Triassic Period?
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 start of the Triassic period (and the Mesozoic era) was a desolate time in Earth's history. Something—a bout of violent volcanic eruptions, climate change, or perhaps a fatal run-in with a...
The Early Triassic Amanus Formation in the Dolaa well northeast of Palmyra was first described by Syrian geologists who recognized a Lower Amanus suite of sandstone (Late Permian) overlain by an Upper Amanus suite of shale (Early Triassic).
Microbes dominated these early ecologies, with microbial reefs occuring in the earliest Triassic. Stromatolites became widespread for the first time in 400 million years. Both in the sea and on land the early Triassic biota are dominated by limited diversity opportunistic fauna and flora.
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 Period, including crocodiles, lizards, and turtles.
The Triassic was named in 1834 by Friedrich von Alberti, after the three distinct rock layers (tri meaning “three”) that are found throughout Germany and northwestern Europe—red beds, capped by marine limestone, followed by a series of terrestrial mud- and sandstones—called the “Trias.”
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. The holdovers included the lycophytes, glossopterids, and dicynodonts.
Beginning in the Late Permian and continuing into the Early Triassic, the emergence of the supercontinent Pangea and the associated reduction in the total area covered by continental shelf seas led to widespread aridity over most land areas.
The Early Triassic refers to the postapocalyptic greenhouse period in the earliest Triassic characterized by increased runoff, changes in stream architecture, and the appearance of eroded soil clods due to atmospheric CO2 spikes.
During the Early Triassic diversity started off very low in land and sea, and recovered over the next ten million years or so. On land, derived cynodonts (advanced carnivorous therapsids) were the dominant predators, and piglet to ox-sized herbivorous dicynodont therapsids were common.
In the wake of the end-Permian mass extinction, the Early Triassic (~251.9 to 247 million years ago) is portrayed as an environmentally unstable interval characterized by several biotic crises and heavily depauperate marine benthic ecosystems.
The temporal, spatial, environmental, and ecological dynamics of the associated biotic recovery remain highly debated, partly due to the scarce, or poorly-known, Early Triassic fossil record.
With each new find, the broader puzzle expands, revealing even more questions that fuel his quest for answers. The early age of dinosaurs—the Triassic Period —remains a favorite of Irmis. Spanning from 252–201 million years ago and framed by two climate-change-driven mass extinction events, this was an exciting era and may even offer key ...
True dinosaurs evolved by approximately 233 million years ago, early in the Late Triassic, and spread across the connected continents. The record of dinosaurs in North America begins during the Late Triassic, approximately 225 million years ago.
The entire Early Triassic record shows temperatures consistently in excess of modern equatorial annual SSTs. These results suggest that equatorial temperatures may have exceeded a tolerable threshold both in the oceans and on land.
The Permian–Triassic (P–Tr) mass extinction, ~252 million years ago (Ma), was the most severe biotic and environmental crisis of the Phanerozoic eon. More than 90% of marine species were lost...
During the Late Permian and subsequent Early Triassic, eruption of the Siberian Traps igneous province through coal and other organically enriched deposits led to vastly increased greenhouse gas concentrations in the atmosphere (6).