Upper Beds Member

Geology

Formation: Tomahawk

Lithologies: sandstone (4), dolomite (1), chert (1)

Paleoenvironments: marine indet. (5)

Age range: base of the Mindyallan to the top of the Pragian or 499.00000 to 410.62000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Mindyallan499.0 - 497.0Australia (Queensland) (77515 77516)
Trempealeauan490.2 - 486.85USA (Missouri) (98345)
Datsonian488.3 - 486.85Australia (Northern Territory) (77616 77617 77619 77620)
Warendian486.85 - 484.3Australia (Queensland) (77514 77466 77467 77468 77469 77472 77473 77474 77485 77486 77487 77510)
Cressagian486.4 - 481.1Australia (Northern Territory) (77710)
Cassinian483.4 - 471.3USA (Missouri) (75520)
Darriwilian469.4 - 458.2Australia (Northern Territory) (79316 79317 79318)
Marshbrookian - Actonian455.0 - 453.0Norway (Hadeland) (166925 166926 166927 166928 166929 166931 166933 166936 166940 166942 166943 167368 167369 167370 167371 167396 167397 167398 167399 167416 167417 167418 167419)
Pragian413.02 - 410.62Canada (Yukon) (39397 100037)