Cliffield Formation, Lincolnshire Limestone Member, Burkes Garden (Ordovician of the United States)

Where: Tazewell County, Virginia (37.1° N, 81.3° W: paleocoordinates 29.7° S, 61.6° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Lincolnshire Limestone Member (Cliffield Formation), Caradocian (460.9 - 449.5 Ma)

• Ashbyan or Whiterockian

• member-level stratigraphic resolution

Environment/lithology: black, gray limestone

• Brownish-gray to black, medium-grained, irregularly bedded limestone averaging 60 feet thick. Nearly all beds contain nodules of dense black chert. Wavy bituminous clayey streaks mark the bedding and cause the beds to weather cobbly. Some layers near the base develop a "worm-eaten" appearance, as clayey stringers are dissolved.

Size class: macrofossils

Primary reference: B. N. Cooper and C. E. Prouty. 1943. Stratigraphy of the Lower Middle Ordovician of Tazewell County, Virginia. Bulletin of the Geological Society of America 54:819-886 [S. Holland/T. Hanson/T. Hanson]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 33454: authorized by Steven Holland, entered by Tori Hanson on 31.07.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Demospongiae
 Lithistida - Streptosolenidae
Eospongia sp. Billings 1861 demosponge
Gastropoda
 Euomphalina - Macluritidae
Maclurites magnus Le Sueur 1818 snail
Lesueur
Strophomenata
 Strophomenida - Syndielasmatidae
Rhynchonellata
 Rhynchonellida - Trigonirhynchiidae
""Camarotoechia" pristina" = Rostricellula pristina
""Camarotoechia" pristina" = Rostricellula pristina Raymond 1905
Raymond
 Orthida - Plaesiomyidae
Dinorthis atavoides Willard 1928
Willard
Stenolaemata
 Cryptostomata - Rhinidictyidae
Pachydictya robusta Ulrich 1882
Ulrich
 Cryptostomata - Arthrostylidae
Glauconome sp. Goldfuss 1826
 Trepostomida - Amplexoporidae
Monotrypa sp. Nicholson 1879
 Trepostomida -
Nicholsonella sp. Ulrich 1890
Trilobita
 Asaphida - Asaphidae
Homotelus cf. elongatus Raymond 1920 trilobite
Raymond