Bac Thuy Formation

Geology

Members: unnamed (75)

Lithologies: claystone (1), mudstone (19), "mixed carbonate-siliciclastic" (2), marl (7), "limestone" (50)

Paleoenvironments: marine indet. (12), carbonate indet. (7), open shallow subtidal (11), slope (45)

Age range: Olenekian or 251.20000 to 247.20000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Smithian251.3 - 247.2Vietnam (143594 143595 143596 143597 143598 143602 155480 155481 155482 155483 155484 155485 155486 155487 155488 155489 155490 155491 155492 155493 155494 155495 155499 155500 155501 155502 155503 155504 155505 155506 155507 155508 155509 155510 155511 155512 155513 155514 155515 155516 155527 155528 155530 155531 155532 155533 155534 155535 155536 155537 155538 155540 155541 155542 155543 155544)
Spathian251.3 - 247.2Vietnam (143599 143600 143601 155496 155497 155498 155517 155518 155519 155520 155521 155522 155523 155524 155525 155529 155539)
Olenekian251.2 - 247.2Vietnam (44754 44755)