Also known as Edinburgh Formation, Liberty Hall Facies; Bed 7
Where: Virginia (38.0° N, 79.0° W: paleocoordinates 30.2° S, 59.3° W)
• coordinate estimated from map
• small collection-level geographic resolution
When: Liberty Hall Member (Edinburg Formation), Caradoc (458.4 - 449.5 Ma)
• Listed as Middle Caradoc. Local series age stated as M1-3
• formation-level stratigraphic resolution
Environment/lithology: offshore shelf; lithified, black limestone and poorly lithified, black shale
Size classes: macrofossils, mesofossils
Primary reference: B. N. Cooper and G. A. Cooper. 1946. Lower Middle Ordovician stratigraphy of the Shenandoah Valley, Virginia. Geological Society America Bulletin 57:35-113 [P. Novack-Gottshall/P. Hearn/J. Ju]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 76337: authorized by Phil Novack-Gottshall, entered by Paul Hearn on 19.11.2007
Creative Commons license: CC BY (attribution)
Taxonomic list
Pterobranchia | |
Climacograptus sp. Hall 1865 climacograptid | |
Diplograptus sp. graptolite | |
Nemagraptus gracilis Hall 1847 graptolite
Dicellograptus sp. Hopkinson 1871 graptolite | |
Echinosphaerites sp. Wahlenberg 1818 | |
Artiopoda | |
"Arthrorhachis elspethi" = Trinodus elspethi
"Arthrorhachis elspethi" = Trinodus elspethi Raymond 1925 | |
Trilobita | |
"Bronteopsis gregaria" = Raymondaspis gregarius
"Bronteopsis gregaria" = Raymondaspis gregarius Raymond 1920 trilobite | |
Ampyx sp. Dalman 1827 trilobite
Ampyxina sp. Ullrich 1922 trilobite | |
Robergia sp. Wiman 1905 trilobite | |
Rhynchonellata | |
"Resserella cf. rogata" = Paucicrura rogata
"Resserella cf. rogata" = Paucicrura rogata Sardeson 1892 | |
Strophomenata | |
Ptychoglyptus sp. Willard 1928 |