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Thaynes Group
Geologic group in the northwestern US From Wikipedia, the free encyclopedia
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The Thaynes Group, Thaynes Formation in older literature, is a geologic group in eastern Idaho, western Wyoming, Utah and eastern Nevada. It includes the Sinbad Formation, Virgin Formation and Shnabkaib Formation.[1] The Thaynes Group is of marine origin. Its formations are interbedded with layers of the non-marine Moenkopi Group.[1]
It preserves fossils dating back to the Early Triassic epoch (Olenekian stage). The Lower Limestone Member contains the Paris biota lagerstätte, one of the first diverse assemblages of the Mesozoic era.[2]
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