B Member

Geology

Group: Omo

Formation: Shungura

Lithologies: siltstone (2), sandstone (10)

Paleoenvironments: fluvial indet. (1), wet floodplain (1), levee (1), lacustrine indet. (2)

Age range: base of the Neoarchean to the top of the Holocene or 2800.00000 to 0.00000 Ma
Collections

Oldest occurrences

Time interval Ma Country or state Original ID and collection number
Neoarchean2800.0 - 2500.0South Africa (227540 227541)
Orosirian2050.0 - 1800.0Canada (Nunavut) (227433 227434 227435 227436 227437 227438 227439 227440 227441 227442 227443 227444 227446 227447 227448 227449 227450 227451)
Orosirian2050.0 - 1800.0Gabon (224218)
Statherian1800.0 - 1600.0Australia (Northern Territory) (227569 227570 227571 227572 227573 227574 227575 227576 227577 227578 227579 227580 227581 227582 227583 227584 227585 227586 227587 227588 227589 227590 227591 227592 227593 227594 227595 232730 232731 232732 232733 232734 232735 232737 232738 232740 232741 232742 232743 232744 232745 232746 232747)
Statherian1800.0 - 1600.0India (Rajasthan) (227965)
Statherian1800.0 - 1600.0Canada (Nunavut) (227620)
Calymmian1600.0 - 1400.0Russian Federation (227480 227481 227482 227483 227484 227485 227486 227487 227488 227497 227498 227499 227500 227501 227502 227503 227504 227505 227506 227507 227508 227509 227510 227511 227512 227513 227514 227515 227516 227517 227518 227519 227521 227522 227523 227524)
Calymmian1600.0 - 1400.0USA (Montana) (227967 227968)
Calymmian1600.0 - 1400.0Australia (Northern Territory) (227557 227558 227559 227560 227561)
Ectasian1400.0 - 1200.0Russian Federation (227489 227490 227491 227492 227493 227494 227495 227496 227520 227525)

Youngest occurrences
Time interval Ma Country or state PBDB collection number
Holocene0.0117 - 0.0Sudan (21902 21903 21904)
Holocene0.0117 - 0.0Argentina (Buenos Aires) (54131 54132 54134 63339 63343 63347)
Holocene0.0117 - 0.0Egypt (21880 21881 21882 21907)
Holocene0.0117 - 0.0Venezuela (131205 131223)
Holocene0.0117 - 0.0Argentina (54133)
Holocene0.0117 - 0.0Brazil (Rio Grande do Sul) (211629 211630 211634)
Holocene0.0117 - 0.0Kenya (21427 21437 21487 21528 21529)
Holocene0.0117 - 0.0Japan (165429)
Holocene0.0117 - 0.0Japan (Osaka) (190349 208988)
Holocene0.0117 - 0.0Japan (Akita) (56380)