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Rockdale Run, USA

FormationRockdale Run
Member(s)lower
Age:479 - 468 Ma
Ordovician
IntervalCanadian
Tectonic SettingPassive margin
Lithologycarbonate, "limestone"/chert, dolomite/chert
Number of Collections4
Number of Occurrences29

Recorded Sample Locations

LocationRegionStratigraphic Name
"Bellefontia FaunaWashington County, Maryland, USARockdale Run - lower
about 2 miles north of LexingtonHighland County, Virginia, USARockdale Run
Brushy Hills 1½ miles west of LexingtonRockbridge County, Virginia, USARockdale Run

Associated Units

Stratigraphic NameAgeLithologyOccurrence Records
Rockdale Run - lower485 - 468 Ma
Paleozoic
carbonate17
Stonehenge Limestone485 - 468 Ma
Paleozoic
limestone12

Recorded Fossils

Accepted NameHierarchyAge
Hystricurus sp.
genus
6Animalia : Arthropoda : Trilobita : Aulacopleurida : Hystricuridae : Hystricurus485.4 - 468.1 Ma
Paleozoic
Diparelasma sp.
genus
6Animalia : Brachiopoda : Rhynchonellata : Orthida : Finkelnburgiidae : Diparelasma485.4 - 468.1 Ma
Paleozoic
Finkelnburgia sp.
genus
6Animalia : Brachiopoda : Rhynchonellata : Orthida : Finkelnburgiidae : Finkelnburgia485.4 - 468.1 Ma
Paleozoic
Diaphelasma sp.
genus
6Animalia : Brachiopoda : Rhynchonellata : Pentamerida : Clarkellidae : Diaphelasma485.4 - 468.1 Ma
Paleozoic
Stichotrophia sp.
genus
6Animalia : Brachiopoda : Rhynchonellata : Pentamerida : Clarkellidae : Stichotrophia485.4 - 468.1 Ma
Paleozoic
Syntrophinella sp.
genus
6Animalia : Brachiopoda : Rhynchonellata : Pentamerida : Clarkellidae : Syntrophinella485.4 - 468.1 Ma
Paleozoic
Xenelasma sp.
genus
6Animalia : Brachiopoda : Rhynchonellata : Pentamerida : Syntrophiidae : Xenelasma485.4 - 468.1 Ma
Paleozoic
Doloresella sp.
genus
6Animalia : Brachiopoda : Rhynchonellata : Pentamerida : Tetralobulidae : Doloresella485.4 - 468.1 Ma
Paleozoic
Polytoechia sp.
genus
6Animalia : Brachiopoda : Strophomenata : Billingsellida : Polytoechiidae : Polytoechia485.4 - 468.1 Ma
Paleozoic
Tritoechia sp.
genus
6Animalia : Brachiopoda : Strophomenata : Billingsellida : Polytoechiidae : Tritoechia485.4 - 468.1 Ma
Paleozoic
Lichenaria sp.
genus
6Animalia : Cnidaria : Anthozoa : Lichenariidae : Lichenaria485.4 - 468.1 Ma
Paleozoic
Crinoidea
class
3Animalia : Echinodermata : Crinoidea485.4 - 468.1 Ma
Paleozoic
Rioceras sp.
genus
6Animalia : Mollusca : Cephalopoda : Baltoceratidae : Rioceras485.4 - 468.1 Ma
Paleozoic
Coreanoceras sp.
genus
6Animalia : Mollusca : Cephalopoda : Manchuroceratidae : Coreanoceras485.4 - 468.1 Ma
Paleozoic
Clitendoceras sp.
genus
6Animalia : Mollusca : Cephalopoda : Proterocameroceratidae : Clitendoceras485.4 - 468.1 Ma
Paleozoic
Escharendoceras sp.
genus
6Animalia : Mollusca : Cephalopoda : Proterocameroceratidae : Escharendoceras485.4 - 468.1 Ma
Paleozoic
Lobosiphon sp.
genus
6Animalia : Mollusca : Cephalopoda : Proterocameroceratidae : Lobosiphon485.4 - 468.1 Ma
Paleozoic
Mcqueenoceras sp.
genus
6Animalia : Mollusca : Cephalopoda : Proterocameroceratidae : Mcqueenoceras485.4 - 468.1 Ma
Paleozoic
Mysticoceras sp.
genus
6Animalia : Mollusca : Cephalopoda : Proterocameroceratidae : Mysticoceras485.4 - 468.1 Ma
Paleozoic
Phragmosiphon sp.
genus
6Animalia : Mollusca : Cephalopoda : Proterocameroceratidae : Phragmosiphon485.4 - 468.1 Ma
Paleozoic
Platysiphon sp.
genus
6Animalia : Mollusca : Cephalopoda : Proterocameroceratidae : Platysiphon485.4 - 468.1 Ma
Paleozoic
Pliendoceras sp.
genus
6Animalia : Mollusca : Cephalopoda : Proterocameroceratidae : Pliendoceras485.4 - 468.1 Ma
Paleozoic
Proterocameroceras sp.
genus
6Animalia : Mollusca : Cephalopoda : Proterocameroceratidae : Proterocameroceras485.4 - 468.1 Ma
Paleozoic
Retroclitendoceras sp.
genus
6Animalia : Mollusca : Cephalopoda : Proterocameroceratidae : Retroclitendoceras485.4 - 468.1 Ma
Paleozoic
Stenosiphon sp.
genus
6Animalia : Mollusca : Cephalopoda : Proterocameroceratidae : Stenosiphon485.4 - 468.1 Ma
Paleozoic
Campbelloceras virginianus
species
7Animalia : Mollusca : Cephalopoda : Tarphycerida : Tarphyceratidae : Campbelloceras : Campbelloceras virginianus478.6 - 468.1 Ma
Ordovician
Centrotarphyceras macdonaldi
species
7Animalia : Mollusca : Cephalopoda : Tarphyceratidae : Centrotarphyceras : Centrotarphyceras macdonaldi478.6 - 468.1 Ma
Ordovician
Lesueurilla sp.
genus
6Animalia : Mollusca : Gastropoda : Lesueurillidae : Lesueurilla485.4 - 468.1 Ma
Paleozoic
Macluritella marylandica
species
7Animalia : Mollusca : Macluritidae : Macluritella : Macluritella marylandica485.4 - 468.1 Ma
Paleozoic
Ecculiomphalus sp.
genus
6Animalia : Mollusca : Gastropoda : Euomphalidae : Ecculiomphalus485.4 - 468.1 Ma
Paleozoic
Ophileta compacta
species
7Animalia : Mollusca : Gastropoda : Ophiletidae : Lecanospira : Ophileta compacta485.4 - 468.1 Ma
Paleozoic
Ophileta sp.
genus
6Animalia : Mollusca : Gastropoda : Raphistomatidae : Ophileta485.4 - 468.1 Ma
Paleozoic
Ceratopea sp.
genus
6Animalia : Mollusca : Gastropoda : Raphistomatidae : Ceratopea485.4 - 468.1 Ma
Paleozoic
Orospira sp.
genus
6Animalia : Mollusca : Gastropoda : Raphistomatidae : Orospira485.4 - 468.1 Ma
Paleozoic
Euchasma blumenbachi
species
7Animalia : Mollusca : Rostroconchia : Conocardiida : Eopteriidae : Euchasma : Euchasma blumenbachi478.6 - 468.1 Ma
Ordovician
Archaeoscyphia sp.
genus
6Animalia : Porifera : Anthaspidellidae : Archaeoscyphia485.4 - 468.1 Ma
Paleozoic

References

Ulrich E. O., Foerste A. F., et al (1942) Ozarkian and Canadian cephalopods, Part I: Nautilicones, Geological Society of America Special Papers 37, 1-157
Sando W. J. (1957) Beekmantown Group (Lower Ordovician) of Maryland, Geological Society of America Memoir 68, 1-159
Flower R. H. (1964) The Nautiloid Order Ellesmeroceratida (Cephalopoda), State Bureau of Mines and Mineral Resources New Mexico Institute of Mining and Technology, Memoir 12, 234 p.
Pojeta J. (1971) Review of Ordovician pelecypods, United States Geological Survey Professional Paper 695, 1-43
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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