Loc. 4. Field northeast of VA-639, ΒΌ from junction with US-11, 0.7 mile southwest Strasburg: Blackriveran, Virginia

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Trilobita - Proetida - Dimeropygidae
Chomatopyge falcata Whittington and Evitt 1953
Trilobita - Odontopleurida - Odontopleuridae
Ceratocephala (Ceratocephalina) tridens Whittington 1956
Whittington 1956
Ceratocephala laciniata Whittington and Evitt 1953
Whittington 1956
Diacanthaspis ulrichi Whittington 1956
Whittington 1956
Diacanthaspis secretus Whittington 1956
Whittington 1956
Diacanthaspis lepidus Whittington 1956
Whittington 1956
Apianurus barbatus Whittington 1956
Whittington 1956
Apianurus glaber Whittington 1956
Whittington 1956
Trilobita - Harpetida - Harpetidae
Dolichoharpes reticulata Whittington 1949
Whittington 1959
Trilobita - Trinucleida - Raphiophoridae
Ampyx virginiensis Cooper 1953
Whittington 1959
Trilobita - Trinucleida - Trinucleidae
Tretaspis sagenosus Whittington 1959
Whittington 1959
Trilobita - Asaphida - Remopleuridae
Remopleuridae indet. Hawle and Corda 1847
Whittington 1959
Trilobita - Asaphida - Remopleurididae
Remopleurides caelatus Whittington 1959
Whittington 1959
Remopleurides eximius n. sp. Whittington 1959
Whittington 1959
Remopleurides caphyroides Whittington 1959
Whittington 1959
Trilobita - Phacopida - Cheiruridae
Sphaerocoryphe gemina Tripp et al. 1997
Tripp et al. 1997
Sphaerocoryphe longispina Tripp et al. 1997
Tripp et al. 1997
Acanthoparypha perforata Whittington and Evitt 1953
Whittington 1959
Trilobita - Phacopida - Encrinuridae
Bevanopsis ulrichi Cooper 1953
Evitt and Tripp 1977
Libertella corona Hu 1971
Evitt and Tripp 1977
Encrinuroides tholus Evitt and Tripp 1977
Evitt and Tripp 1977
recombined as Physemataspis tholus
see common names

Geography
Country:United States State/province:Virginia County:Shenandoah
Coordinates: 39.0° North, 78.4° West (view map)
Paleocoordinates:29.7° South, 58.2° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Ordovician Epoch:Late/Upper Ordovician
10 m.y. bin:Ordovician 4-5
Key time interval:Blackriveran Graptolite zone: Climacograptus peltifer
Age range of interval:457.00000 - 449.80000 m.y. ago
Stratigraphy
Formation:Edinburg Member:Botetourt limestone
Stratigraphic resolution:bed
Lithology and environment
Primary lithology: "limestone"
Lithology description: Alterations of dark granular limestone and dark fine-grained limestone with spponge spicules
Environment:carbonate indet.
Taphonomy
Modes of preservation:body,replaced with silica
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:some macrofossils
Reason for describing collection:taxonomic analysis
Museum repositories:USNM
Metadata
Database number:73343
Authorizer:P. Wagner, M. Hopkins Enterer:P. Wagner, M. Hopkins
Modifier:P. Wagner Research group:marine invertebrate
Created:2007-06-12 15:59:43 Last modified:2014-11-20 21:41:16
Access level:the public Released:2007-06-12 15:59:43
Creative Commons license:CC BY
Reference information

Primary reference:
24623. H. B. Whittington and W.R., I.I. Evitt. 1953. Silicified Middle Ordovician trilobites. Geological Society of America Memoir 59:1-139 [P. Wagner/P. Wagner/P. Wagner]

Secondary references:

83773 W. R. Evitt and R. P. Tripp. 1977. Silicified Middle Ordovician trilobites from the families Encrinuridae and Staurocephalidae. Palaeontographica Abteilung A 157:109-174 [P. Wagner/P. Wagner]
53529 R. P. Tripp, D. M. Rudkin, and W. R. Evitt. 1997. Silicified trilobites of the genus Sphaerocoryphe from the Middle Ordovician of Virginia. Canadian Journal of Earth Sciences 34:770-788 [P. Wagner/P. Wagner]
35193 H. B. Whittington. 1956. Silicified Middle Ordovician trilobites: the Odontopleuridae. Bulletin of the Museum of Comparative Zoology 114(6):155-288 [M. Hopkins/M. Hopkins/M. Hopkins]
35208 H. B. Whittington. 1959. Silicified Middle Ordovician trilobites: Remopleuridae, Trinucleidae, Raphiophoridae, Endymioniidae. Bulletin of the Museum of Comparative Zoology 121(8):371-496 [M. Hopkins/M. Hopkins]