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Permian Tosi Chert Member of the Phosphoria in Wyoming, Natrona County, Wyoming, USA

Mindat.org Locality Page	Natrona County, Wyoming, USA
Lat/Long (Decimal)	42.9667,-106.783
Co-ordinates Derivation	based on political unit
Given Location	Wyoming, United States
Mindat.org Region (for given coordinates)	Natrona County, Wyoming, USA

Collections

Collection	Reference	Stratigraphic Name	Comments	Lithology	Age
Ervay Carbonate Rock Member, Park City Formation of Wyoming	Yochelson E. L., Van Sickle D. H. (1968)	Park City - Ervay	Davydov et al. 2017 dated an ash bed in the upper Meade Peak Member at 260.57 ± 0.07 / 0.14 / 0.31 Ma, indicating that the Meade Peak is as young as uppermost Capitanian.	lime mudstone	259.9 - 252.17 Ma Permian
Franson Member, Park City Formation of Wyoming	Yochelson E. L., Van Sickle D. H. (1968)	Park City - Franson	Davydov et al. 2017 dated an ash bed in the upper Meade Peak Member at 260.57 ± 0.07 / 0.14 / 0.31 Ma, indicating that the Meade Peak is as young as uppermost Capitanian.	lime mudstone	259.9 - 254.17 Ma Permian
Permian Tosi Chert Member of the Phosphoria in Wyoming	Yochelson E. L., Van Sickle D. H. (1968)	Phosphoria - Tosi Chert	Davydov et al. 2017 dated an ash bed in the upper Meade Peak Member at 260.57 ± 0.07 / 0.14 / 0.31 Ma, indicating that the Meade Peak is as young as uppermost Capitanian.	chert	259.9 - 252.17 Ma Permian
Retort Phosphatic Shale Member, Phosphoria Formation of Wyoming	Yochelson E. L., Van Sickle D. H. (1968)	Phosphoria - Retort Phosphatic Shale	Davydov et al. 2017 dated an ash bed in the upper Meade Peak Member at 260.57 ± 0.07 / 0.14 / 0.31 Ma, indicating that the Meade Peak is as young as uppermost Capitanian.	claystone	259.9 - 252.17 Ma Permian
Rex Chert Member, Phosphoria Formation of Wyoming	Yochelson E. L., Van Sickle D. H. (1968)	Phosphoria - Rex Chert	Davydov et al. 2017 dated an ash bed in the upper Meade Peak Member at 260.57 ± 0.07 / 0.14 / 0.31 Ma, indicating that the Meade Peak is as young as uppermost Capitanian.	chert	259.9 - 254.17 Ma Permian
Lower Member of the Shedhorn Formation, Wyoming	Yochelson E. L., Van Sickle D. H. (1968)	Shedhorn - Lower		sandstone	268.8 - 265.1 Ma Permian
Upper Member of the Shedhorn Formation, Wyoming	Yochelson E. L., Van Sickle D. H. (1968)	Shedhorn - Upper		sandstone	268.8 - 265.1 Ma Permian
Meade Peak Phosphatic Shale Member, Phosphoria Formation of Wyoming	Yochelson E. L., Van Sickle D. H. (1968)	Phosphoria - Meade Peak Phosphatic Shale		claystone	272.3 - 268.8 Ma Permian
Grandeur Member, Park City Formation of Wyoming	Yochelson E. L., Van Sickle D. H. (1968)	Park City - Grandeur		"limestone"	290.1 - 268 Ma Permian
Lower Chert Member, Phosphoria Formation of Wyoming	Yochelson E. L., Van Sickle D. H. (1968)	Phosphoria - Lower Chert		chert	298.9 - 252.17 Ma Paleozoic

Recorded Fossils

Accepted Name	Hierarchy	Age
Trilobita class	Animalia : Arthropoda : Trilobita	290.1 - 268 Ma Permian
Orbiculoidea sp. genus	Animalia : Brachiopoda : Lingulata : Lingulida : Discinidae : *Orbiculoidea*	259.9 - 252.17 Ma Permian
Orbiculoidea missouriensis species	Animalia : Brachiopoda : Lingulata : Lingulida : Discinidae : Orbiculoidea : *Orbiculoidea missouriensis*	259.9 - 254.17 Ma Permian
Orbiculoidea utahensis species	Animalia : Brachiopoda : Lingulata : Lingulida : Discinidae : Orbiculoidea : *Orbiculoidea utahensis*	259.9 - 252.17 Ma Permian
Lingula sp. genus	Animalia : Brachiopoda : Lingulata : Lingulida : Lingulidae : *Lingula*	259.9 - 252.17 Ma Permian
Lingula carbonaria species	Animalia : Brachiopoda : Lingulata : Lingulida : Lingulidae : Lingula : *Lingula carbonaria*	272.3 - 268.8 Ma Permian
Composita sp. genus	Animalia : Brachiopoda : Rhynchonellata : Athyridida : Athyrididae : *Composita*	259.9 - 252.17 Ma Permian
Composita mira species	Animalia : Brachiopoda : Rhynchonellata : Athyridida : Athyrididae : Composita : *Composita mira*	259.9 - 252.17 Ma Permian
Composita subtilita species	Animalia : Brachiopoda : Rhynchonellata : Athyridida : Athyrididae : Composita : *Composita subtilita*	259.9 - 252.17 Ma Permian
Hustedia sp. genus	Animalia : Brachiopoda : Rhynchonellata : Athyridida : Neoretziidae : *Hustedia*	259.9 - 252.17 Ma Permian
Leiorhynchus sp. genus	Animalia : Brachiopoda : Rhynchonellata : Rhynchonellida : Leiorhynchidae : *Leiorhynchus*	272.3 - 268.8 Ma Permian
Wellerella osagensis species	Animalia : Brachiopoda : Rhynchonellata : Rhynchonellida : Wellerellidae : Wellerella : *Wellerella osagensis*	259.9 - 252.17 Ma Permian
Crurithyris sp. genus	Animalia : Brachiopoda : Rhynchonellata : Spiriferida : Ambocoeliidae : *Crurithyris*	272.3 - 268.8 Ma Permian
Timaniella pseudocamerata species	Animalia : Brachiopoda : Rhynchonellata : Spiriferida : Spiriferellidae : Timaniella : *Timaniella pseudocamerata*	268.8 - 265.1 Ma Permian
Neospirifer sp. genus	Animalia : Brachiopoda : Rhynchonellata : Spiriferida : Trigonotretidae : *Neospirifer*	259.9 - 252.17 Ma Permian
Xestotrema pulchrum species	Animalia : Brachiopoda : Rhynchonellata : Spiriferinida : Pennospiriferinidae : Xestotrema : *Xestotrema pulchrum*	259.9 - 252.17 Ma Permian
Spiriferina sp. genus	Animalia : Brachiopoda : Rhynchonellata : Spiriferinida : Spiriferinidae : *Spiriferina*	259.9 - 252.17 Ma Permian
Derbyia sp. genus	Animalia : Brachiopoda : Strophomenata : Orthotetida : Derbyiidae : *Derbyia*	259.9 - 252.17 Ma Permian
Sphenosteges sp. genus	Animalia : Brachiopoda : Strophomenata : Productida : Aulostegidae : *Sphenosteges*	259.9 - 252.17 Ma Permian
Sphenosteges hispidus species	Animalia : Brachiopoda : Strophomenata : Productida : Aulostegidae : Sphenosteges : *Sphenosteges hispidus*	259.9 - 252.17 Ma Permian
Chonetes sp. genus	Animalia : Brachiopoda : Strophomenata : Productida : Chonetidae : *Chonetes*	259.9 - 252.17 Ma Permian
Bathymyonia sp. genus	Animalia : Brachiopoda : Strophomenata : Productida : Echinoconchidae : *Bathymyonia*	259.9 - 252.17 Ma Permian
Bathymyonia nevadensis species	Animalia : Brachiopoda : Strophomenata : Productida : Echinoconchidae : Bathymyonia : *Bathymyonia nevadensis*	259.9 - 252.17 Ma Permian
Juresania sp. genus	Animalia : Brachiopoda : Strophomenata : Productida : Echinoconchidae : *Juresania*	290.1 - 268 Ma Permian
Anidanthus sp. genus	Animalia : Brachiopoda : Strophomenata : Productida : Linoproductidae : *Anidanthus*	272.3 - 268.8 Ma Permian
Cancrinella sp. genus	Animalia : Brachiopoda : Strophomenata : Productida : Linoproductidae : *Cancrinella*	259.9 - 254.17 Ma Permian
Cancrinella phosphatica species	Animalia : Brachiopoda : Strophomenata : Productida : Linoproductidae : Cancrinella : *Cancrinella phosphatica*	259.9 - 252.17 Ma Permian
Echinauris sp. genus	Animalia : Brachiopoda : Strophomenata : Productida : Productellidae : *Echinauris*	259.9 - 252.17 Ma Permian
Hystriculina sp. genus	Animalia : Brachiopoda : Strophomenata : Productida : Productellidae : *Hystriculina*	298.9 - 252.17 Ma Paleozoic
Liosotella sp. genus	Animalia : Brachiopoda : Strophomenata : Productida : Productellidae : *Liosotella*	259.9 - 252.17 Ma Permian
Antiquatonia sp. genus	Animalia : Brachiopoda : Strophomenata : Productida : Productidae : *Antiquatonia*	259.9 - 254.17 Ma Permian
Yakovlevia sp. genus	Animalia : Brachiopoda : Strophomenata : Productida : Productidae : *Yakovlevia*	259.9 - 252.17 Ma Permian
Komiella ostiolata species	Animalia : Brachiopoda : Strophomenata : Productida : Rugosochonetidae : Komiella : *Komiella ostiolata*	259.9 - 252.17 Ma Permian
Fenestrata order	Animalia : Bryozoa : Stenolaemata : Fenestrata	259.9 - 252.17 Ma Permian
Trepostomata order	Animalia : Bryozoa : Stenolaemata : Trepostomatida	259.9 - 252.17 Ma Permian
Helicoprion sp. genus	Animalia : Chordata : Chondrichthyes : Eugeneodontiformes : Helicoprionidae : *Helicoprion*	272.3 - 268.8 Ma Permian
Osteichthyes unranked clade	Animalia : Chordata : Osteichthyes	259.9 - 252.17 Ma Permian
Rugosa subclass	Animalia : Cnidaria : Anthozoa : Rugosa	268.8 - 265.1 Ma Permian
Conulariida order	Animalia : Cnidaria : Scyphozoa : Conulariida	259.9 - 252.17 Ma Permian
Celtoides sp. genus	Animalia : Mollusca : Bivalvia : Venerida : Permophoridae : *Celtoides*	259.9 - 252.17 Ma Permian
Astartella sp. genus	Animalia : Mollusca : Bivalvia : Carditida : Astartidae : *Astartella*	259.9 - 254.17 Ma Permian
Myalina (Myalina) sinuata species	Animalia : Mollusca : Bivalvia : Myalinida : Myalinidae : Myalina : *Myalina (Myalina) sinuata*	259.9 - 252.17 Ma Permian
Myalina (Myalina) wyomingensis species	Animalia : Mollusca : Bivalvia : Myalinida : Myalinidae : Myalina : *Myalina (Myalina) wyomingensis*	259.9 - 254.17 Ma Permian
Wilkingia sp. genus	Animalia : Mollusca : Bivalvia : Sanguinolitidae : *Wilkingia*	259.9 - 252.17 Ma Permian
Polidevcia sp. genus	Animalia : Mollusca : Bivalvia : *Polidevcia*	259.9 - 252.17 Ma Permian
Polidevcia bellistriata species	Animalia : Mollusca : Bivalvia : Nuculanida : Nuculanidae : Polidevcia : *Polidevcia bellistriata*	259.9 - 252.17 Ma Permian
Polidevcia obesa species	Animalia : Mollusca : Bivalvia : Nuculanida : Nuculanidae : Polidevcia : *Polidevcia obesa*	259.9 - 252.17 Ma Permian
Nuculopsis sp. genus	Animalia : Mollusca : Bivalvia : Nuculida : Nuculidae : *Nuculopsis*	259.9 - 252.17 Ma Permian
Nuculopsis poposiensis species	Animalia : Mollusca : Bivalvia : Nuculida : Nuculidae : Nuculopsis : *Nuculopsis poposiensis*	259.9 - 252.17 Ma Permian
Bakevellia sp. genus	Animalia : Mollusca : Bivalvia : Ostreida : Bakevelliidae : *Bakevellia*	259.9 - 254.17 Ma Permian
Aviculopinna sp. genus	Animalia : Mollusca : Bivalvia : Ostreida : Pinnidae : *Aviculopinna*	259.9 - 254.17 Ma Permian
Aviculopecten sp. genus	Animalia : Mollusca : Bivalvia : Myalinida : Myalinidae : *Aviculopecten*	259.9 - 252.17 Ma Permian
Aviculopecten girtyi species	Animalia : Mollusca : Bivalvia : Myalinida : Myalinidae : Aviculopecten : *Aviculopecten girtyi*	290.1 - 268 Ma Permian
Cyrtorostra varicostata species	Animalia : Mollusca : Bivalvia : Pectinida : Cyrtorostridae : Cyrtorostra : *Cyrtorostra varicostata*	259.9 - 252.17 Ma Permian
Streblopteria montpelierensis species	Animalia : Mollusca : Bivalvia : Pectinida : Deltopectinidae : Streblopteria : *Streblopteria montpelierensis*	272.3 - 268.8 Ma Permian
Cassianoides sexcostatus species	Animalia : Mollusca : Bivalvia : Pectinida : Heteropectinidae : Cassianoides : *Cassianoides sexcostatus*	259.9 - 252.17 Ma Permian
Girtypecten sp. genus	Animalia : Mollusca : Bivalvia : Pectinida : Etheripectinidae : *Girtypecten*	259.9 - 254.17 Ma Permian
Heteropecten vanvleeti species	Animalia : Mollusca : Bivalvia : Pectinida : Heteropectinidae : Heteropecten : *Heteropecten vanvleeti*	259.9 - 252.17 Ma Permian
Vnigripecten phosphaticus species	Animalia : Mollusca : Bivalvia : Pectinida : Heteropectinidae : Vnigripecten : *Vnigripecten phosphaticus*	272.3 - 268.8 Ma Permian
Acanthopecten sp. genus	Animalia : Mollusca : Bivalvia : Pectinida : Aviculopectinidae : *Acanthopecten*	272.3 - 268.8 Ma Permian
Acanthopecten delawarensis species	Animalia : Mollusca : Bivalvia : Pectinida : Limipectinidae : Acanthopecten : *Acanthopecten delawarensis*	290.1 - 268 Ma Permian
Camptonectes sp. genus	Animalia : Mollusca : Bivalvia : Pectinida : Pectinidae : *Camptonectes*	259.9 - 252.17 Ma Permian
Pseudomonotis sp. genus	Animalia : Mollusca : Bivalvia : Pectinida : Pseudomonotidae : *Pseudomonotis*	259.9 - 252.17 Ma Permian
Guizhoupecten sp. genus	Animalia : Mollusca : Bivalvia : Pectinida : Streblochondriidae : *Guizhoupecten*	259.9 - 252.17 Ma Permian
Guizhoupecten tubicostata species	Animalia : Mollusca : Bivalvia : Pectinida : Streblochondriidae : Guizhoupecten : *Guizhoupecten tubicostata*	272.3 - 268.8 Ma Permian
Edmondia sp. genus	Animalia : Mollusca : Bivalvia : Adapedonta : Edmondiidae : *Edmondia*	259.9 - 252.17 Ma Permian
Edmondia gibbosa species	Animalia : Mollusca : Bivalvia : Adapedonta : Edmondiidae : Edmondia : *Edmondia gibbosa*	259.9 - 252.17 Ma Permian
Scaphellina concinna species	Animalia : Mollusca : Bivalvia : Trigoniida : Scaphellinidae : Scaphellina : *Scaphellina concinna*	259.9 - 254.17 Ma Permian
Schizodus sp. genus	Animalia : Mollusca : Bivalvia : Trigoniida : Schizodidae : *Schizodus*	259.9 - 252.17 Ma Permian
Schizodus bifidus species	Animalia : Mollusca : Bivalvia : Trigoniida : Schizodidae : Schizodus : *Schizodus bifidus*	259.9 - 254.17 Ma Permian
Schizodus canalis species	Animalia : Mollusca : Bivalvia : Trigoniida : Schizodidae : Schizodus : *Schizodus canalis*	259.9 - 252.17 Ma Permian
Schizodus wheeleri species	Animalia : Mollusca : Bivalvia : Trigoniida : Schizodidae : Schizodus : *Schizodus wheeleri*	290.1 - 268 Ma Permian
Belemnitida order	Animalia : Mollusca : Cephalopoda : Belemnitida	259.9 - 252.17 Ma Permian
Pseudogastrioceras sp. genus	Animalia : Mollusca : Cephalopoda : Ammonoidea : Paragastrioceratidae : *Pseudogastrioceras*	272.3 - 268.8 Ma Permian
Stearoceras sp. genus	Animalia : Mollusca : Cephalopoda : Nautilida : Grypoceratidae : *Stearoceras*	259.9 - 252.17 Ma Permian
Peripetoceras sp. genus	Animalia : Mollusca : Cephalopoda : Nautilida : Liroceratidae : *Peripetoceras*	272.3 - 268.8 Ma Permian
Mooreoceras sp. genus	Animalia : Mollusca : Cephalopoda : Pseudorthoceratidae : *Mooreoceras*	290.1 - 268 Ma Permian
Gastropoda class	Animalia : Mollusca : Gastropoda	290.1 - 268 Ma Permian
Bellerophon deflectus species	Animalia : Mollusca : Gastropoda : Bellerophontidae : Bellerophon : *Bellerophon deflectus*	259.9 - 254.17 Ma Permian
Retispira sp. genus	Animalia : Mollusca : Gastropoda : Bellerophontidae : *Retispira*	268.8 - 265.1 Ma Permian
Yochelsonellisa eximia species	Animalia : Mollusca : Gastropoda : Bellerophontida : Bellerophontidae : Yochelsonellisa : *Yochelsonellisa eximia*	259.9 - 254.17 Ma Permian
Euphemites sp. genus	Animalia : Mollusca : Gastropoda : Euphemitidae : *Euphemites*	259.9 - 252.17 Ma Permian
Euphemites crenulatus species	Animalia : Mollusca : Gastropoda : Euphemitidae : Euphemites : *Euphemites crenulatus*	259.9 - 254.17 Ma Permian
Euphemitopsis subpapillosa species	Animalia : Mollusca : Gastropoda : Bellerophontida : Euphemitidae : Euphemitopsis : *Euphemitopsis subpapillosa*	259.9 - 252.17 Ma Permian
Warthia sp. genus	Animalia : Mollusca : Gastropoda : Euphemitidae : *Warthia*	268.8 - 265.1 Ma Permian
Warthia fissus species	Animalia : Mollusca : Gastropoda : Euphemitidae : Warthia : *Warthia fissus*	259.9 - 254.17 Ma Permian
Trachydomia sp. genus	Animalia : Mollusca : Gastropoda : Cycloneritida : Trachyspiridae : *Trachydomia*	268.8 - 265.1 Ma Permian
Cyclites sp. genus	Animalia : Mollusca : Gastropoda : Trochida : Microdomatidae : *Cyclites*	259.9 - 254.17 Ma Permian
Babylonites sp. genus	Animalia : Mollusca : Gastropoda : Omphalotrochidae : *Babylonites*	272.3 - 268.8 Ma Permian
Apachella sp. genus	Animalia : Mollusca : Gastropoda : Pleurotomariida : Gosseletinidae : *Apachella*	259.9 - 254.17 Ma Permian
Glabrocingulum sp. genus	Animalia : Mollusca : Gastropoda : Pleurotomariida : Eotomariidae : *Glabrocingulum*	259.9 - 254.17 Ma Permian
Worthenia sp. genus	Animalia : Mollusca : Gastropoda : Lophospiridae : *Worthenia*	272.3 - 268.8 Ma Permian
Conocardium sp. genus	Animalia : Mollusca : Rostroconchia : *Conocardium*	259.9 - 252.17 Ma Permian
Dentalium sp. genus	Animalia : Mollusca : Scaphopoda : Dentaliida : Dentaliidae : *Dentalium*	259.9 - 254.17 Ma Permian
Prodentalium canna species	Animalia : Mollusca : Scaphopoda : Dentaliida : Prodentaliidae : Prodentalium : *Prodentalium canna*	259.9 - 252.17 Ma Permian
Porifera phylum	Animalia : Porifera	259.9 - 254.17 Ma Permian

References

Yochelson E. L., Van Sickle D. H. (1968) Biostratigraphy of the Phosphoria, Park City, and Shedhorn Formations; Geology of Permian Rocks in the Western Phosphate Field, United States Geological Survey Professional Paper 313 D, 572-660

Newell N. D., Boyd D.W. (1995) Pectinoid bivalves of the Permian-Triassic crisis, Bulletin of the American Museum of Natural History 227, 1-95

Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!

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