Frasnian

森林生态系统形成 ← 南美大冰期开始 ← 洪斯吕克板岩生物群（英语：Hunsrück Slate） 泥盆纪时间表 直轴：百万年前 弗拉斯期（英語：Frasnian）是泥盆纪的第六个时期，年代大约位于382.7–372.2百万年前。 Parry, S. F.; Noble, S. R.; Crowley,

  Kaufmann, B.; Trapp, E.; Mezger, K. The numerical age of the Upper Frasnian (Upper Devonian) Kellwasser horizons: A new U-Pb zircon date from Steinbruch

  Kaufmann, B.; Trapp, E.; Mezger, K. The numerical age of the Upper Frasnian (Upper Devonian) Kellwasser horizons: A new U-Pb zircon date from Steinbruch

  Kaufmann, B.; Trapp, E.; Mezger, K. The numerical age of the Upper Frasnian (Upper Devonian) Kellwasser horizons: A new U-Pb zircon date from Steinbruch

Patterns of extinction and recovery of phacopid trilobites during the Frasnian-Famennian (Late Devonian) mass extinction event, Canning Basin, Western