Phosphoria Formation

Geology

Members: unnamed (1), Cherty Shale (1), Ervay (1), Franson (8), Grandeur (2), Lower Chert (1), Meade Peak (79), Meade Peak Phosphatic Shale (4), Retort (17), Retort Phosphatic Shale (3), Rex (2), Rex Chert (9), Tosi (6), Tosi Chert (2)

Lithologies: not reported (5), "siliciclastic" (3), claystone (7), mudstone (15), "shale" (55), siltstone (1), sandstone (2), "limestone" (53), chert (8)

Paleoenvironments: marine indet. (42), carbonate indet. (4), shallow subtidal indet. (1), offshore ramp (26), offshore indet. (5), coastal indet. (1), offshore (57)

Age range: base of the Kungurian to the top of the Capitanian or 279.30000 to 259.51000 Ma
Collections

Time interval Ma Country or state Original ID and collection number
Permian298.9 - 251.902USA (Montana) (11274)
Permian298.9 - 251.902USA (Wyoming) (11230)
Kungurian279.3 - 272.3USA (Wyoming) (95420 113084)
Roadian272.3 - 268.8USA (Utah) (11271 95043 108901 108918 108920 108935 142645)
Roadian272.3 - 268.8USA (Idaho) (11285 88260 105271 105282 105283 105286 105287 105291 105337 105339 105340 105351 105356 105365 105367 105368 107751 107752 107753 107754 107755 108900 108902 108903 108907 108921 108922 108924 108925 108926 108927 108928 108929 108930 120619 125739 132826 140078 140145 152127 152128 152129 152130 152131)
Roadian272.3 - 268.8USA (Montana) (11280)
Roadian272.3 - 268.8USA (Wyoming) (11229 61938 89635 89636 90006 105284 105289 105341 105372 108904 108905 108906 108908 108909 108910 108911 108912 108913 108914 108915 108916 108917 108919 108923 108931 108932 108933 108934 128880 149345 149346)
Capitanian264.28 - 259.51USA (Montana) (105278)
Wuchiapingian259.9 - 254.17USA (Idaho) (11283 96807 108743 108744 108745 108746 108747)
Wuchiapingian259.9 - 254.17USA (Wyoming) (11227 90235 90236 90237 90238 90239 95417 95800)
Wuchiapingian259.9 - 254.17USA (Utah) (11233 95381)
Wuchiapingian259.9 - 254.17USA (Nevada) (105813)
Wuchiapingian259.9 - 254.17USA (Montana) (11278)
Lopingian259.9 - 252.17USA (Montana) (11273 11275 88662 95024 105335 105349 105369 105370 107756 107757 107758 107759 107760 107761 107762 107763 107764 107765)
Lopingian259.9 - 252.17USA (Wyoming) (11222 11224 83004 87156 88654 95799 105359 105360 117947)
Lopingian259.9 - 252.17USA (Idaho) (11282 184611)