Rio do Rasto Formation

Geology

Group: Passa Dois

Members: unnamed (7), Morro Pelado (11), Serrinha (4), Serrinha/Morro Pelado (1)

Lithologies: not reported (4), "siliciclastic" (5), claystone (2), mudstone (2), "shale" (1), siltstone (4), sandstone (2), conglomerate (2)

Paleoenvironments: terrestrial indet. (6), delta plain (1), delta front (1), deltaic indet. (1), fluvial indet. (1), fluvial-lacustrine indet. (1), lacustrine - large (6), lacustrine indet. (2)

Age range: base of the Sakmarian to the top of the Changhsingian or 293.52000 to 251.90200 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Sakmarian293.52 - 290.1Brazil (Santa Catarina) (232534)
Roadian - Capitanian274.4 - 259.51Brazil (Rio Grande do Sul) (106558 171380 171381 176058)
Roadian - Wuchiapingian274.4 - 254.14Brazil (Santa Catarina ) (184288)
Wordian - Capitanian266.9 - 259.51Brazil (Paraná) (209026)
Wordian - Capitanian266.9 - 259.51Brazil (Rio Grande do Sul) (78657 185751)
Wordian - Wuchiapingian266.9 - 254.14Brazil (Paraná) (185753 186658)
Capitanian264.28 - 259.51Brazil (Paraná) (138449)
Capitanian - Wuchiapingian264.28 - 254.14Brazil (132148)
Capitanian - Wuchiapingian264.28 - 254.14Brazil (Paraná) (209020 209022 209023 209024)
Lopingian259.51 - 251.902Brazil (Paraná) (197299)
Wuchiapingian - Changhsingian259.51 - 251.902Brazil (Parana) (29502)
Wuchiapingian - Changhsingian259.51 - 251.902Brazil (29474 29494)
Changhsingian - Wuchiapingian254.14 - 254.14Brazil (29481)
Changhsingian254.14 - 251.902Brazil (Santa Catarina ) (123007)