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Maquoketa - Brainard Shale, USA

Group	Maquoketa
Formation	Brainard Shale
Age:	450 - 444 Ma Paleozoic
Interval	Richmondian
Lithology	shale
Number of Collections	3
Number of Occurrences	43

Recorded Sample Locations

Location	Region	Stratigraphic Name
Spechts Ferry Formation Ostracodes of Iowa	Boone County, Iowa, USA	Maquoketa - Brainard Shale
Mifflin Formation Echinoderms of the Upper Mississippi Valley	Clinton County, Iowa, USA	Maquoketa - Brainard Shale
St. Peter Sandstone Cephalopods	Grant County, Wisconsin, USA	Maquoketa - Brainard Shale

Associated Units

Stratigraphic Name	Age	Lithology	Occurrence Records
Blanding	441 - 433 Ma Silurian	lime mudstone/wackestone, lime mudstone/packstone, wackestone/grainstone, dolomite	56
Glenwood	461 - 450 Ma Ordovician		127
Gower	433 - 423 Ma Silurian	carbonate	9
Grand Detour	461 - 450 Ma Ordovician	limestone	147
Hopkinton	439 - 433 Ma Silurian	wackestone	55
Hopkinton - Farmers Creek	439 - 433 Ma Silurian	wackestone/packstone, packstone, packstone/grainstone, grainstone/packstone, dolomite	219
Hopkinton - Sweeney	441 - 439 Ma Silurian	lime mudstone/packstone	11
Mifflin	461 - 450 Ma Ordovician	limestone	161
Nachusa	461 - 450 Ma Ordovician		157
Pecatonica	461 - 450 Ma Ordovician	limestone	110
Quimbys Mill	461 - 450 Ma Ordovician	limestone/dolomite, "limestone"	194
Scotch Grove - Welton	433 - 427 Ma Silurian	wackestone, wackestone/packstone, packstone/wackestone, dolomite	294
Spechts Ferry	461 - 450 Ma Ordovician	shale/"limestone", "shale"	132
St. Peter Sandstone	461 - 450 Ma Ordovician	sandstone	149
Galena - Dubuque	461 - 450 Ma Ordovician	limestone, wackestone	68
Galena - Dunleith - Beecher	461 - 450 Ma Ordovician	limestone	194
Galena - Dunleith - Eagle Point	461 - 450 Ma Ordovician	limestone	198
Galena - Dunleith - Fairplay	461 - 450 Ma Ordovician	shale/"limestone"	146
Galena - Dunleith - Mortimer	461 - 450 Ma Ordovician	limestone	156
Galena - Dunleith - Rivoli	461 - 450 Ma Ordovician	limestone	151
Galena - Dunleith - Sherwood	453 - 445 Ma Late/Upper Ordovician	limestone, wackestone	180
Galena - Dunleith - Wall	461 - 450 Ma Ordovician	limestone	168
Galena - Dunleith - Wyota	461 - 450 Ma Ordovician	limestone	159
Galena - Guttenberg	461 - 450 Ma Ordovician	limestone, "limestone"/"shale"	204
Galena - Guttenberg - Glenhaven	461 - 450 Ma Ordovician	mudstone/"shale"	16
Galena - Ion - Buckhorn	461 - 450 Ma Ordovician	limestone	203
Galena - Ion - St. James	461 - 450 Ma Ordovician	shale	180
Galena - Spechts Ferry	461 - 450 Ma Ordovician	limestone, "shale"	58
Galena - Wise Lake - Rifle Hill	461 - 450 Ma Ordovician	dolomite	65
Galena - Wise Lake - Sinsinawa	461 - 450 Ma Ordovician	limestone	155
Maquoketa - Fort Atkinson Limestone	452 - 450 Ma Late/Upper Ordovician	dolomite, "limestone"	41
Maquoketa - Neda	450 - 444 Ma Paleozoic		17
Maquoketa - Scales Shale - Clermont	452 - 450 Ma Late/Upper Ordovician	limestone, "shale"	111
Maquoketa - Scales Shale - Elgin	450 - 444 Ma Paleozoic	limestone, wackestone	157
Platteville - Grand Detour	461 - 450 Ma Ordovician	limestone	28
Platteville - Pecatonica	461 - 450 Ma Ordovician	limestone	13

Recorded Fossils

Accepted Name	Type	Hierarchy	Age
Kiesowia sp. genus	6	Animalia : Arthropoda : Ostracoda : Palaeocopida : Ctenonotellidae : *Kiesowia*	449.5 - 443.7 Ma Paleozoic
Tetradella sp. genus	6	Animalia : Arthropoda : Ostracoda : Palaeocopida : Tetradellidae : *Tetradella*	449.5 - 443.7 Ma Paleozoic
Aechmina sp. genus	6	Animalia : Arthropoda : Ostracoda : Palaeocopida : Aechminidae : *Aechmina*	449.5 - 443.7 Ma Paleozoic
Bollia sp. genus	6	Animalia : Arthropoda : Ostracoda : Palaeocopida : Bolliidae : *Bollia*	449.5 - 443.7 Ma Paleozoic
Ceratopsis sp. genus	6	Animalia : Arthropoda : Ostracoda : Palaeocopida : Quadrijugatoridae : *Ceratopsis*	449.5 - 443.7 Ma Paleozoic
Euprimitia sp. genus	6	Animalia : Arthropoda : Ostracoda : Palaeocopida : Primitiidae : *Euprimitia*	449.5 - 443.7 Ma Paleozoic
Laccoprimitia sp. genus	6	Animalia : Arthropoda : Ostracoda : Palaeocopida : *Laccoprimitia*	449.5 - 443.7 Ma Paleozoic
Leperditella sp. genus	6	Animalia : Arthropoda : Ostracoda : Leperditiidae : *Leperditella*	449.5 - 443.7 Ma Paleozoic
Schmidtella sp. genus	6	Animalia : Arthropoda : Ostracoda : Palaeocopida : *Schmidtella*	449.5 - 443.7 Ma Paleozoic
Zygobolboides sp. genus	6	Animalia : Arthropoda : Ostracoda : Palaeocopida : *Zygobolboides*	449.5 - 443.7 Ma Paleozoic
Eridoconcha sp. genus	6	Animalia : Arthropoda : Ostracoda : Podocopida : *Eridoconcha*	449.5 - 443.7 Ma Paleozoic
Dendrocrinus sp. genus	6	Animalia : Echinodermata : Crinoidea : Dendrocrinidae : *Dendrocrinus*	449.5 - 443.7 Ma Paleozoic
Trichinocrinus sp. genus	6	Animalia : Echinodermata : Crinoidea : Rhodocrinitidae : *Trichinocrinus*	449.5 - 443.7 Ma Paleozoic
Sygcaulocrinus typus species	7	Animalia : Echinodermata : Crinoidea : Homocrinidae : Sygcaulocrinus : *Sygcaulocrinus typus*	449.5 - 443.7 Ma Paleozoic
Xenocrinus sp. genus	6	Animalia : Echinodermata : Crinoidea : *Xenocrinus*	449.5 - 443.7 Ma Paleozoic
Cupulocrinus sp. genus	6	Animalia : Echinodermata : Crinoidea : *Cupulocrinus*	449.5 - 443.7 Ma Paleozoic
Plicodendrocrinus casei species	7	Animalia : Echinodermata : Crinoidea : Plicodendrocrinidae : Plicodendrocrinus : *Plicodendrocrinus casei*	449.5 - 443.7 Ma Paleozoic
Carabocrinus sp. genus	6	Animalia : Echinodermata : Crinoidea : Carabocrinidae : *Carabocrinus*	449.5 - 443.7 Ma Paleozoic
Porocrinus sp. genus	6	Animalia : Echinodermata : Crinoidea : *Porocrinus*	449.5 - 443.7 Ma Paleozoic
Cyclocystoides sp. genus	6	Animalia : Echinodermata : Cyclocystoidea : Cyclocystoididae : *Cyclocystoides*	449.5 - 443.7 Ma Paleozoic
Bothriocidaris sp. genus	6	Animalia : Echinodermata : Echinoidea : Bothriocidaridae : *Bothriocidaris*	449.5 - 443.7 Ma Paleozoic
Rhenopyrgus sp. genus	6	Animalia : Echinodermata : Edrioasteroidea : Edrioasterida : Rhenopyrgidae : *Rhenopyrgus*	449.5 - 443.7 Ma Paleozoic
Astrocystites sp. genus	6	Animalia : Echinodermata : Edrioasteroidea : Pentacystida : Steganoblastidae : *Astrocystites*	449.5 - 443.7 Ma Paleozoic
Anartiocystis sp. genus	6	Animalia : Echinodermata : Rhombifera : Callocystitidae : *Anartiocystis*	449.5 - 443.7 Ma Paleozoic
Iowacystis sp. genus	6	Animalia : Echinodermata : Soluta : Syringocrinida : Iowacystidae : *Iowacystis*	449.5 - 443.7 Ma Paleozoic
Diamphidiocystis sp. genus	6	Animalia : Echinodermata : Stylophora : Mitrata : *Diamphidiocystis*	449.5 - 443.7 Ma Paleozoic
Deiroceras sp. genus	6	Animalia : Mollusca : Cephalopoda : Nautilida : Nautilidae : *Deiroceras*	449.5 - 443.7 Ma Paleozoic
Beloitoceras sp. genus	6	Animalia : Mollusca : Cephalopoda : Oncoceratidae : *Beloitoceras*	449.5 - 443.7 Ma Paleozoic

References

Swain F. M. (1987) Middle and Upper Ordovician Ostracoda of Minnesota and Iowa, Minnesota Geological Survey Report of Investigations 35, 99-101

Kolata D. R., Brower J. C., et al (1987) Upper Mississippi Valley Champlainian and Cincinnatian echinoderms, Middle and Late Ordovician lithostratigraphy and biostratigraphy of the Upper Mississippi Valley: Minnesota Geological Survey Report of Investigations 35, 179-181

Catalani J. A. (1987) Biostratigraphy of the Middle and Late Ordovician cephalopods of the Upper Mississippi Valley area, Middle and Late Ordovician lithostratigraphy and biostratigraphy of the Upper Mississippi Valley: Minnesota Geological Survey Report of Investigations 35, 187-189

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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