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词汇 Early Triassic epoch
分类 英语词汇 英语翻译词典
释义

Early Triassic epoch

英语百科

Early Triassic

Sandstone from the Early Triassic Epoch
Early Triassic brittle stars (echinoderms)
Early Triassic marine predators

The Early Triassic is the first of three epochs of the Triassic Period of the geologic timescale. It spans the time between 252.17 ± 0.06 Ma and 247.2 Ma (million years ago). Rocks from this epoch are collectively known as the Lower Triassic, which is a unit in chronostratigraphy. The Early Triassic is the oldest epoch of the Mesozoic Era and is divided into the Induan and Olenekian ages.

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