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Copenhagen - C, Eureka County, Nevada, USA

Formation	Copenhagen
Member	C
Age:	458 - 450 Ma Late/Upper Ordovician
Interval	Mohawkian
Lithology	siltstone
Number of Collections	17
Number of Occurrences	107

Recorded Sample Locations

Location	Region	Stratigraphic Name
Zone 7	Eureka County, Nevada, USA	Copenhagen - C
CopenhagenFarm	Eureka County, Nevada, USA	Copenhagen - C
section 24	Eureka County, Nevada, USA	Copenhagen - C
Loc. MR-U	Eureka County, Nevada, USA	Copenhagen - C

Associated Units

Stratigraphic Name	Age	Lithology	Occurrence Records
Antelope Valley - Middle	472 - 458 Ma Ordovician	limestone	5
Antelope Valley Limestone - Upper	472 - 458 Ma Ordovician	limestone, dolomite	80
Antelope Valley Ls - Middle	472 - 458 Ma Ordovician	limestone	17
Antelope Valley Ls - Upper	488 - 472 Ma Paleozoic	limestone	12
Copenhagen - A	458 - 450 Ma Late/Upper Ordovician	shale, sandstone	9
Copenhagen - Argillite	461 - 450 Ma Ordovician	limestone	29
Copenhagen - B	458 - 450 Ma Late/Upper Ordovician	limestone	110
Denay Limestone	393 - 388 Ma Devonian	packstone, mudstone/conglomerate, mudstone/marl, mudstone/packstone, lime mudstone/marl, "limestone", dolomite	405
Goodwin	479 - 472 Ma Early/Lower Ordovician	limestone/conglomerate, dolomite, "limestone", siltstone	91
Ninemile	479 - 468 Ma Ordovician	limestone/"shale", "limestone", "shale", siltstone/"limestone", siltstone, "shale"/packstone	184
Ninemile Shale	472 - 466 Ma Ordovician	mudstone/lime mudstone, "shale"/"limestone", "shale", "shale"/packstone, "limestone"/"shale", "limestone"	100
Nevada - Denay Limestone	393 - 388 Ma Devonian	packstone, "limestone"	146
Pogonip - Copenhagen	466 - 461 Ma Middle Ordovician	limestone	1
Pogonip - Goodwin	485 - 472 Ma Paleozoic	limestone	2

Recorded Fossils

Accepted Name	Type	Hierarchy	Age
Ostracoda class	3	Animalia : Arthropoda : Ostracoda	457.5 - 452.5 Ma Late/Upper Ordovician
Anataphrus sp. genus	6	Animalia : Arthropoda : Trilobita : Asaphida : Asaphidae : *Anataphrus*	457.5 - 452.5 Ma Late/Upper Ordovician
Anataphrus martinensis species	7	Animalia : Arthropoda : Trilobita : Asaphida : Asaphidae : Anataphrus : *Anataphrus martinensis*	457.5 - 452.5 Ma Late/Upper Ordovician
Isotelus sp. genus	6	Animalia : Arthropoda : Trilobita : Asaphida : Asaphidae : *Isotelus*	457.5 - 452.5 Ma Late/Upper Ordovician
Isotelus copenhagenensis species	7	Animalia : Arthropoda : Trilobita : Asaphida : Asaphidae : Isotelus : *Isotelus copenhagenensis*	457.5 - 452.5 Ma Late/Upper Ordovician
Lonchodomas sp. genus	6	Animalia : Arthropoda : Trilobita : Asaphida : Raphiophoridae : *Lonchodomas*	457.5 - 452.5 Ma Late/Upper Ordovician
Raymondella nevadensis species	7	Animalia : Arthropoda : Trilobita : Asaphida : Raphiophoridae : Raymondella : *Raymondella nevadensis*	457.5 - 452.5 Ma Late/Upper Ordovician
Hypodicranotus sp. genus	6	Animalia : Arthropoda : Trilobita : Asaphida : Remopleurididae : *Hypodicranotus*	457.5 - 452.5 Ma Late/Upper Ordovician
Pugilator deckeri species	7	Animalia : Arthropoda : Trilobita : Asaphida : Remopleurididae : Pugilator : *Pugilator deckeri*	457.5 - 452.5 Ma Late/Upper Ordovician
Remopleurides sp. genus	6	Animalia : Arthropoda : Trilobita : Asaphida : Remopleurididae : *Remopleurides*	457.5 - 452.5 Ma Late/Upper Ordovician
Robergiella sp. genus	6	Animalia : Arthropoda : Trilobita : Asaphida : Remopleurididae : *Robergiella*	457.5 - 452.5 Ma Late/Upper Ordovician
Cryptolithoides sp. genus	6	Animalia : Arthropoda : Trilobita : Asaphida : Trinucleidae : *Cryptolithoides*	457.5 - 452.5 Ma Late/Upper Ordovician
Cryptolithoides reticulatus species	7	Animalia : Arthropoda : Trilobita : Asaphida : Trinucleidae : Cryptolithoides : *Cryptolithoides reticulatus*	457.5 - 452.5 Ma Late/Upper Ordovician
Bumastus sp. genus	6	Animalia : Arthropoda : Trilobita : Corynexochida : Illaenidae : *Bumastus*	460.9 - 449.5 Ma Ordovician
Illaenidae family	5	Animalia : Arthropoda : Trilobita : Corynexochida : Illaenidae	457.5 - 452.5 Ma Late/Upper Ordovician
Lichida order	4	Animalia : Arthropoda : Trilobita : Lichida	457.5 - 452.5 Ma Late/Upper Ordovician
Amphilichas minganensis species	7	Animalia : Arthropoda : Trilobita : Lichida : Lichidae : Amphilichas : *Amphilichas minganensis*	457.5 - 452.5 Ma Late/Upper Ordovician
Harpididae family	5	Animalia : Arthropoda : Trilobita : Harpetida : Harpididae	457.5 - 452.5 Ma Late/Upper Ordovician
Primaspis sp. genus	6	Animalia : Arthropoda : Trilobita : Lichida : Odontopleuridae : *Primaspis*	457.5 - 452.5 Ma Late/Upper Ordovician
Triarthrus sp. genus	6	Animalia : Arthropoda : Trilobita : Ptychopariida : Olenidae : *Triarthrus*	457.5 - 452.5 Ma Late/Upper Ordovician
Ceraurinella sp. genus	6	Animalia : Arthropoda : Trilobita : Phacopida : Cheiruridae : *Ceraurinella*	457.5 - 452.5 Ma Late/Upper Ordovician
Ceraurus sp. genus	6	Animalia : Arthropoda : Trilobita : Phacopida : Cheiruridae : *Ceraurus*	457.5 - 452.5 Ma Late/Upper Ordovician
Sphaerocoryphe sp. genus	6	Animalia : Arthropoda : Trilobita : Phacopida : Cheiruridae : *Sphaerocoryphe*	457.5 - 452.5 Ma Late/Upper Ordovician
Cybeloides sp. genus	6	Animalia : Arthropoda : Trilobita : Phacopida : Encrinuridae : *Cybeloides*	457.5 - 452.5 Ma Late/Upper Ordovician
Calyptaulax sp. genus	6	Animalia : Arthropoda : Trilobita : Phacopida : Pterygometopidae : *Calyptaulax*	457.5 - 452.5 Ma Late/Upper Ordovician
Calyptaulax callirachis species	7	Animalia : Arthropoda : Trilobita : Phacopida : Pterygometopidae : Calyptaulax : *Calyptaulax callirachis*	457.5 - 452.5 Ma Late/Upper Ordovician
Orthida order	4	Animalia : Brachiopoda : Rhynchonellata : Orthida	457.5 - 452.5 Ma Late/Upper Ordovician
Paucicrura sp. genus	6	Animalia : Brachiopoda : Rhynchonellata : Orthida : Dalmanellidae : *Paucicrura*	457.5 - 452.5 Ma Late/Upper Ordovician
Hesperorthis sp. genus	6	Animalia : Brachiopoda : Rhynchonellata : Orthida : Hesperorthidae : *Hesperorthis*	457.5 - 452.5 Ma Late/Upper Ordovician
Dinorthis sp. genus	6	Animalia : Brachiopoda : Rhynchonellata : Orthida : Plaesiomyidae : *Dinorthis*	460.9 - 449.5 Ma Ordovician
Plectorthis sp. genus	6	Animalia : Brachiopoda : Rhynchonellata : Orthida : Plectorthidae : *Plectorthis*	457.5 - 452.5 Ma Late/Upper Ordovician
Skenidioides sp. genus	6	Animalia : Brachiopoda : Rhynchonellata : Protorthida : Skenidiidae : *Skenidioides*	457.5 - 452.5 Ma Late/Upper Ordovician
Oxoplecia sp. genus	6	Animalia : Brachiopoda : Strophomenata : Orthotetida : Triplesiidae : *Oxoplecia*	457.5 - 452.5 Ma Late/Upper Ordovician
Bimuria sp. genus	6	Animalia : Brachiopoda : Strophomenata : Strophomenida : Bimuriidae : *Bimuria*	457.5 - 452.5 Ma Late/Upper Ordovician
Leptellina sp. genus	6	Animalia : Brachiopoda : Strophomenata : Strophomenida : Leptellinidae : *Leptellina*	457.5 - 452.5 Ma Late/Upper Ordovician
Bilobia sp. genus	6	Animalia : Brachiopoda : Strophomenata : Strophomenida : Leptestiidae : *Bilobia*	457.5 - 452.5 Ma Late/Upper Ordovician
Plectambonitidae family	5	Animalia : Brachiopoda : Strophomenata : Strophomenida : Plectambonitidae	457.5 - 452.5 Ma Late/Upper Ordovician
Eoplectodonta sp. genus	6	Animalia : Brachiopoda : Strophomenata : Strophomenida : Sowerbyellidae : *Eoplectodonta*	457.5 - 452.5 Ma Late/Upper Ordovician
Eoplectodonta (Eoplectodonta) alternata species	7	Animalia : Brachiopoda : Strophomenata : Strophomenida : Sowerbyellidae : Eoplectodonta : *Eoplectodonta (Eoplectodonta) alternata*	457.5 - 452.5 Ma Late/Upper Ordovician
Sowerbyella sp. genus	6	Animalia : Brachiopoda : Strophomenata : Strophomenida : Sowerbyellidae : *Sowerbyella*	457.5 - 452.5 Ma Late/Upper Ordovician
Strophomena sp. genus	6	Animalia : Brachiopoda : Strophomenata : Strophomenida : Strophomenidae : *Strophomena*	457.5 - 452.5 Ma Late/Upper Ordovician
Trigrammaria sp. genus	6	Animalia : Brachiopoda : Strophomenata : Strophomenida : Strophomenidae : *Trigrammaria*	460.9 - 449.5 Ma Ordovician
Prasopora sp. genus	6	Animalia : Bryozoa : Stenolaemata : Trepostomatida : Monticuliporidae : *Prasopora*	460.9 - 449.5 Ma Ordovician
Climacograptus sp. genus	6	Animalia : Hemichordata : Pterobranchia : Diplograptidae : *Climacograptus*	457.5 - 452.5 Ma Late/Upper Ordovician
Sinuites sp. genus	6	Animalia : Mollusca : Gastropoda : Sinuitidae : *Sinuites*	460.9 - 449.5 Ma Ordovician
Clathrospira sp. genus	6	Animalia : Mollusca : Gastropoda : Pleurotomariida : Eotomariidae : *Clathrospira*	457.5 - 452.5 Ma Late/Upper Ordovician
Receptaculites sp. genus	6	Chlorophyta : Chlorophyceae : Receptaculitidae : *Receptaculites*	457.5 - 452.5 Ma Late/Upper Ordovician

References

Webb G. W. (1958) Middle Ordovician stratigraphy in eastern Nevada and western Utah, AAPG Bulletin 42 10, 2335-2377

Ross, Jr. R. J. (1970) Ordovician Brachiopods, Trilobites, and Stratigraphy in Eastern and Central Nevada, United States Geological Survey Professional Paper 639, 1-99

Ross, Jr. R. J., Shaw F. C. (1972) Distribution of the Middle Ordovician Copenhagen Formation and its trilobites in Nevada, United States Geological Survey Professional Paper 749, 1-33

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!