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Chesapeake - Eastover - Cobham Bay, Virginia, USA

Group	Chesapeake
Formation	Eastover
Member	Cobham Bay
Age:	7.25 - 5.33 Ma Miocene
Interval	Late Miocene
Lithology	sandstone
Number of Collections	8
Number of Occurrences	49

Recorded Sample Locations

Location	Region	Stratigraphic Name
Locality 251	Virginia, USA	Chesapeake - Eastover - Cobham Bay
Locality 503	Surry County, Virginia, USA	Chesapeake - Eastover - Cobham Bay
USGS Loc. 25309 - Urbana Creek [Cobham Bay Mbr	Virginia, USA	Chesapeake - Eastover - Cobham Bay
USGS Loc. 26407 - James River [Yorktown Fm]	Prince George County, Virginia, USA	Chesapeake - Eastover - Cobham Bay
Bowlers Wharf	Essex County, Virginia, USA	Chesapeake - Eastover - Cobham Bay
Mount Pleasant	Surry County, Virginia, USA	Chesapeake - Eastover - Cobham Bay
Warren Brothers sand pits	Henrico County, Virginia, USA	Chesapeake - Eastover - Cobham Bay
Schooff Property	New Kent County, Virginia, USA	Chesapeake - Eastover - Cobham Bay

Associated Units

Stratigraphic Name	Age	Lithology	Occurrence Records
Old Church	23.0 - 16.0 Ma Miocene	sandstone	23
Chesapeake - Eastover - Claremont Manor	7.25 - 5.33 Ma Miocene	sandstone	99
Chesapeake - Old Church	23.0 - 16.0 Ma Miocene	sandstone	17
Chesapeake - Yorktown - Rushmere	3.60 - 2.59 Ma Cenozoic	sandstone	18
Chesapeake - Yorktown - Sunken Meadow	5.33 - 3.60 Ma Neogene	sandstone	31
Pamunkey - Aquia - Paspotansa	58.7 - 55.8 Ma Paleogene	sandstone	32

Recorded Fossils

Accepted Name	Type	Hierarchy	Age
Dallarca carolinensis species	7	*Dallarca carolinensis*	7.246 - 5.333 Ma Miocene
Cirripedia subclass	3.3	Animalia : Arthropoda : Maxillopoda : Cirripedia	7.246 - 5.333 Ma Miocene
Chesaconcavus sp. genus	6	Animalia : Arthropoda : Maxillopoda : Sessilia : Balanidae : *Chesaconcavus*	11.62 - 7.246 Ma Miocene
Chesaconcavus myosulcatus species	7	Animalia : Arthropoda : Maxillopoda : Sessilia : Balanidae : Chesaconcavus : *Chesaconcavus myosulcatus*	11.62 - 7.246 Ma Miocene
Chesaconcavus proteus species	7	Animalia : Arthropoda : Maxillopoda : Sessilia : Balanidae : Chesaconcavus : *Chesaconcavus proteus*	7.246 - 5.333 Ma Miocene
Paraconcavus sp. genus	6	Animalia : Arthropoda : Maxillopoda : Sessilia : Balanidae : *Paraconcavus*	11.608 - 5.333 Ma Miocene
Paraconcavus neusensis species	7	Animalia : Arthropoda : Maxillopoda : Sessilia : Balanidae : Paraconcavus : *Paraconcavus neusensis*	11.62 - 7.246 Ma Miocene
Gomphotheriidae family	5	Animalia : Chordata : Mammalia : Proboscidea : Gomphotheriidae	7.246 - 5.333 Ma Miocene
Rasia arata species	7	Animalia : Mollusca : Bivalvia : Arcida : Arcidae : Anadara : *Rasia arata*	7.246 - 5.333 Ma Miocene
Costaglycymeris mixoni species	7	Animalia : Mollusca : Bivalvia : Arcida : Glycymerididae : Costaglycymeris : *Costaglycymeris mixoni*	7.246 - 5.333 Ma Miocene
Chesacardium laqueatum species	7	Animalia : Mollusca : Bivalvia : Cardiida : Cardiidae : Chesacardium : *Chesacardium laqueatum*	7.246 - 5.333 Ma Miocene
Astarte cobhamensis species	7	Animalia : Mollusca : Bivalvia : Carditida : Astartidae : Astarte : *Astarte cobhamensis*	7.246 - 5.333 Ma Miocene
Astarte rappahannockensis species	7	Animalia : Mollusca : Bivalvia : Carditida : Astartidae : Astarte : *Astarte rappahannockensis*	7.246 - 5.333 Ma Miocene
Marvacrassatella sp. genus	6	Animalia : Mollusca : Bivalvia : Carditida : Crassatellidae : *Marvacrassatella*	7.246 - 5.333 Ma Miocene
Panopea goldfussii species	7	Animalia : Mollusca : Bivalvia : Adapedonta : Hiatellidae : Panopea : *Panopea goldfussii*	7.246 - 5.333 Ma Miocene
Stewartia anodonta species	7	Animalia : Mollusca : Bivalvia : Lucinida : Lucinidae : Stewartia : *Stewartia anodonta*	7.246 - 5.333 Ma Miocene
Isognomon sp. genus	6	Animalia : Mollusca : Bivalvia : Ostreida : Pteriidae : *Isognomon*	11.608 - 5.333 Ma Miocene
Isognomon (Hippochaeta) sp. subgenus	6.3	Animalia : Mollusca : Bivalvia : Ostreida : Malleidae : Isognomon : *Isognomon (Hippochaeta)*	7.246 - 5.333 Ma Miocene
Ostrea compressirostra species	7	Animalia : Mollusca : Bivalvia : Ostreida : Ostreidae : Ostrea : *Ostrea compressirostra*	7.246 - 5.333 Ma Miocene
Carolinapecten urbannaensis species	7	Animalia : Mollusca : Bivalvia : Pectinida : Pectinidae : Carolinapecten : *Carolinapecten urbannaensis*	7.246 - 5.333 Ma Miocene
Chesapecten middlesexensis species	7	Animalia : Mollusca : Bivalvia : Myalinida : Myalinidae : Chesapecten : *Chesapecten middlesexensis*	11.608 - 5.333 Ma Miocene
Placopecten princepoides species	7	Animalia : Mollusca : Bivalvia : Pectinida : Pectinidae : Placopecten : *Placopecten princepoides*	7.246 - 5.333 Ma Miocene
Kuphus fistula species	7	Animalia : Mollusca : Bivalvia : Pholadida : Teredinidae : Kuphus : *Kuphus fistula*	7.246 - 5.333 Ma Miocene
Euloxa sp. genus	6	Animalia : Mollusca : Bivalvia : Venerida : Euloxidae : *Euloxa*	11.608 - 5.333 Ma Miocene
Glossus fraterna species	7	Animalia : Mollusca : Bivalvia : Veneroidei : Glossidae : Glossus : *Glossus fraterna*	7.246 - 5.333 Ma Miocene
Leptomactra delumbis species	7	Animalia : Mollusca : Bivalvia : Veneroidei : Mactridae : Leptomactra : *Leptomactra delumbis*	7.246 - 5.333 Ma Miocene
Spisula rappahannockensis species	7	Animalia : Mollusca : Bivalvia : Venerida : Mactridae : Spisula : *Spisula rappahannockensis*	7.246 - 5.333 Ma Miocene
Lirophora vredenburgi species	7	Animalia : Mollusca : Bivalvia : Venerida : Veneridae : Lirophora : *Lirophora vredenburgi*	7.246 - 5.333 Ma Miocene
Mercenaria druidi species	7	Animalia : Mollusca : Bivalvia : Veneroidei : Veneridae : Mercenaria : *Mercenaria druidi*	7.246 - 5.333 Ma Miocene
Busycotypus coronatum species	7	Animalia : Mollusca : Gastropoda : Neogastropoda : Melongenidae : Busycotypus : *Busycotypus coronatum*	7.246 - 5.333 Ma Miocene
Ecphora kochi species	7	Animalia : Mollusca : Gastropoda : Neogastropoda : Muricidae : Ecphora : *Ecphora kochi*	7.246 - 5.333 Ma Miocene
Bulliopsis quadrata species	7	Animalia : Mollusca : Gastropoda : Neogastropoda : Nassariidae : Bulliopsis : *Bulliopsis quadrata*	7.246 - 5.333 Ma Miocene
Laevihastula simplex species	7	Animalia : Mollusca : Gastropoda : Neogastropoda : Terebridae : Laevihastula : *Laevihastula simplex*	7.246 - 5.333 Ma Miocene
Mariacolpus plebeia species	7	Animalia : Mollusca : Gastropoda : Sorbeoconcha : Turritellidae : Mariacolpus : *Mariacolpus plebeia*	7.246 - 5.333 Ma Miocene

References

Ward L. W. (1985) Stratigraphy and Characteristic Mollusks of the Pamunkey Group (Lower Tertiary) and the Old Church Formation of the Chesapeake Group-Virginia Coastal Plain, United States Geological Survey Professional Paper 1346, 1-77

Ward L. W. (1992) Molluscan biostratigraphy of the Miocene Middle Atlantic Coastal Plain of North America, Virginia Museum of Natural History 2

Kline D. B. (1997) Systematics and biostratigraphy of Miocene Cirripedia of the Chesapeake Group; Maryland, North Carolina, and Virginia, Unpublished Masters thesis, University of North Carolina, Wilmington

Beatty B. L., Dooley A. C. (2013) The first terrestrial mammal from the Late Miocene Eastover Formation of Virginia, Jeffersoniana 29, 1-6

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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