Lower Dawan Member

Geology

Formation: Dawan

Lithologies: "shale" (7), lime mudstone (2), grainstone (1), "limestone" (3), "carbonate" (4)

Paleoenvironments: carbonate indet. (3), shallow subtidal indet. (1), deep subtidal shelf (3), offshore shelf (3)

Age range: base of the Ediacaran to the top of the Holocene or 635.00000 to 0.00000 Ma
Collections

Oldest occurrences

Time interval Ma Country or state Original ID and collection number
Ediacaran635.0 - 541.0Kazakhstan (10693)
Ediacaran635.0 - 541.0USA (North Carolina) (10257 10258 10259)
Ediacaran635.0 - 541.0Norway (Finnmark) (10250)
Ediacaran635.0 - 541.0Australia (Northern Territory) (10511)
Ediacaran635.0 - 541.0Spain (205645)
Ediacaran635.0 - 541.0Australia (South Australia) (10512 10513 10514 10515 10516 10517)
Ediacaran635.0 - 541.0Canada (Northwest Territories) (10433)
Ediacaran635.0 - 541.0USA (California) (7181 7178)
Ediacaran635.0 - 541.0USA (Nevada) (7180 7177)
Wonokan580.0 - 580.0Canada (Yukon) (10354)

Youngest occurrences

Time interval Ma Country or state PBDB collection number
Calabrian1.806 - 0.781Japan (162761 162762 162766 162767 162770 162771 162777 162778 162779)
Irvingtonian1.8 - 0.3USA (Kansas) (20137 20165 20422 20423 20424)
Irvingtonian1.8 - 0.3USA (California) (20155)
Irvingtonian1.8 - 0.3USA (Texas) (20411 20412)
Middle Pleistocene0.781 - 0.126Bolivia (Chuquisaca) (70704)
Middle Pleistocene0.781 - 0.126Japan (Chiba) (96893)
Middle Pleistocene - Quaternary0.781 - 0.0India (Hoshangabad, Madhya Pradesh) (13447)
Late/Upper Pleistocene0.126 - 0.0117Canada (New Brunswick) (73665)
Late/Upper Pleistocene0.126 - 0.0117Argentina (Corrientes) (187628)
Holocene0.0117 - 0.0USA (Louisiana) (41934)