Olenekian
Period
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In the geologic timescale, the Olenekian is an age in the Early Triassic epoch; in chronostratigraphy, it is a stage in the Lower Triassic series. It spans the time between 251.2 Ma and 247.2 Ma. The Olenekian is sometimes divided into the... Wikipedia
Occurred: 251.2 million years ago - 247.2 million years ago
Epoch: Early Triassic
Lower boundary definition: Not formally defined
Lower boundary GSSP candidate section(s): Mud (Muth) village, Spiti valley, India
Upper boundary definition candidates: FAD of the Conodont Chiosella timorensis; Base of magnetic zone MT1n
Upper boundary GSSP candidate section(s): Desli Caira, Northern Dobruja, Romania; Guandao, Guizhou, China
Organisms
