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Roubidoux, USA

Formation	Roubidoux
Age:	485 - 479 Ma Paleozoic
Interval	Migneintian
Lithology	dolomite/chert, "limestone", chert
Number of Collections	12
Number of Occurrences	39

Recorded Sample Locations

Location	Region	Stratigraphic Name
near Gold Mine Hollow	Oregon County, Missouri, USA	Roubidoux
MR-27. Northeast side of Johnyy Hollow	Shannon County, Missouri, USA	Roubidoux
MR-23. East side of old Rocky Road	Shannon County, Missouri, USA	Roubidoux
MR-14. West side of State Highway 5	Douglas County, Missouri, USA	Roubidoux
MR-18. 0.1 mile north of Spring Creek.	Ozark County, Missouri, USA	Roubidoux
1 mile south of Narrows	Giles County, Virginia, USA	Roubidoux
4.5 miles south of Harrisonburg	Rockingham County, Virginia, USA	Roubidoux
about 5 miles south of Mansfield on the road to Ava	Douglas County, Missouri, USA	Roubidoux
on the road from Doniphon to Oxly	Ripley County, Missouri, USA	Roubidoux
MR-15	Searcy County, Arkansas, USA	Roubidoux

Associated Units

Stratigraphic Name	Age	Lithology	Occurrence Records
Gasconade Dolomite	485 - 478 Ma Paleozoic	limestone/dolomite, dolomite, chert/dolomite, dolomite/chert	32

Recorded Fossils

Accepted Name	Type	Hierarchy	Age
Hystricurus sp. genus	6	Animalia : Arthropoda : Trilobita : Aulacopleurida : Hystricuridae : *Hystricurus*	485.4 - 478.6 Ma Paleozoic
Hystricurus deflectus species	7	Animalia : Arthropoda : Trilobita : Aulacopleurida : Hystricuridae : Hystricurus : *Hystricurus deflectus*	485.4 - 478.6 Ma Paleozoic
Hystricurus elevatus species	7	Animalia : Arthropoda : Trilobita : Aulacopleurida : Hystricuridae : Hystricurus : *Hystricurus elevatus*	485.4 - 478.6 Ma Paleozoic
Paraplethopeltis minuta species	7	Animalia : Arthropoda : Trilobita : Aulacopleurida : Hystricuridae : Paraplethopeltis : *Paraplethopeltis minuta*	485.4 - 478.6 Ma Paleozoic
Jeffersonia bridgei species	7	Animalia : Arthropoda : Trilobita : Proetida : Bathyuridae : Jeffersonia : *Jeffersonia bridgei*	485.4 - 478.6 Ma Paleozoic
Syntrophina sp. genus	6	Animalia : Brachiopoda : Rhynchonellata : Pentamerida : Clarkellidae : *Syntrophina*	485.4 - 478.6 Ma Paleozoic
Leptocyrtoceras virginianum species	7	Animalia : Mollusca : Cephalopoda : Bassleroceratidae : Leptocyrtoceras : *Leptocyrtoceras virginianum*	485.4 - 478.6 Ma Paleozoic
Monogonoceras sp. genus	6	Animalia : Mollusca : Cephalopoda : Bassleroceratidae : *Monogonoceras*	485.4 - 478.6 Ma Paleozoic
Monogonoceras subrectum species	7	Animalia : Mollusca : Cephalopoda : Bassleroceratidae : Monogonoceras : *Monogonoceras subrectum*	485.4 - 478.6 Ma Paleozoic
Bassleroceras bridgei species	7	Animalia : Mollusca : Cephalopoda : Bassleroceratidae : Bassleroceras : *Bassleroceras bridgei*	485.4 - 478.6 Ma Paleozoic
Protocycloceras sp. genus	6	Animalia : Mollusca : Cephalopoda : Nautilida : Nautilidae : *Protocycloceras*	485.4 - 478.6 Ma Paleozoic
Campbelloceras sp. genus	6	Animalia : Mollusca : Cephalopoda : Tarphyceratidae : *Campbelloceras*	485.4 - 478.6 Ma Paleozoic
Macluritella stantoni species	7	Animalia : Mollusca : Macluritidae : Macluritella : *Macluritella stantoni*	485.4 - 478.6 Ma Paleozoic
Lecanospira sp. genus	6	Animalia : Mollusca : Gastropoda : Euomphalina : Ophiletidae : *Lecanospira*	485.4 - 478.6 Ma Paleozoic
Lecanospira perplana species	7	Animalia : Mollusca : Gastropoda : Ophiletidae : Lecanospira : *Lecanospira perplana*	485.4 - 478.6 Ma Paleozoic
Lecanospira soluta species	7	Animalia : Mollusca : Gastropoda : Ophiletidae : Lecanospira : *Lecanospira soluta*	485.4 - 478.6 Ma Paleozoic
Murchisonia gracilis species	7	Animalia : Mollusca : Gastropoda : Pleurotomariida : Murchisoniidae : Murchisonia : *Murchisonia gracilis*	485.4 - 478.6 Ma Paleozoic
Plethospira extensa species	7	Animalia : Mollusca : Gastropoda : Pleurotomariida : Murchisoniidae : Plethospira : *Plethospira extensa*	485.4 - 478.6 Ma Paleozoic
Euconia sp. genus	6	Animalia : Mollusca : Gastropoda : Sinuopeidae : *Euconia*	485.4 - 478.6 Ma Paleozoic
Jarlopsis conicus species	7	Animalia : Mollusca : Gastropoda : Sinuopeidae : Euconia : *Jarlopsis conicus*	485.4 - 478.6 Ma Paleozoic
Roubidouxia umbilicata species	7	Animalia : Mollusca : Gastropoda : Sinuopeidae : Euconia : *Roubidouxia umbilicata*	485.4 - 478.6 Ma Paleozoic
Hypseloconus compressus species	7	Animalia : Mollusca : Tergomya : Hypseloconida : Hypseloconus : *Hypseloconus compressus*	485.4 - 478.6 Ma Paleozoic
Ozarkoconus prearcuatus species	7	Animalia : Mollusca : Tergomya : Kiringellida : Hypseloconidae : Ozarkoconus : *Ozarkoconus prearcuatus*	485.4 - 478.6 Ma Paleozoic
Kirengella oregonensis species	7	Animalia : Mollusca : Tergomya : Tryblidiida : Kirengellidae : Kirengella : *Kirengella oregonensis*	485.4 - 478.6 Ma Paleozoic
Proplina elongata species	7	Animalia : Mollusca : Tergomya : Tryblidiida : Tryblidiidae : Proplina : *Proplina elongata*	485.4 - 478.6 Ma Paleozoic

References

Ulrich E. O., Foerste A. F., et al (1944) Ozarkian and Canadian cephalopods, longicones and summary, Geological Society of America Special Paper 58, 1-226

Heller R. L. (1954) Stratigraphy and paleontology of the Roubidoux Formation of Missouri, State of Missouri Department of Business and Administration, Division of Geological Survey and Water Resources, 1-60

Stinchcomb B.L., Angeli N.A. (2002) New Cambrian and Lower Ordovician monoplacophorans from the Ozark Uplift, Missouri, Journal of Paleontology 76 6, 965-974

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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