quarry at Pounding Mill (Ordovician of the United States)

Also known as Cliffield Formation, Peery Limestone Member, quarry at Pounding Mill

Where: Virginia (37.1° N, 81.7° W: paleocoordinates 29.5° S, 61.9° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Peery Limestone Member (Cliffield Formation), Ashbyan (457.3 - 449.6 Ma)

• Ashbyan

• member-level stratigraphic resolution

Environment/lithology: black, gray, argillaceous limestone

• Dark bluish-gray to black fine-grained argillaceous limestone. Chert is abundant. Waxy seams of silty clay and streaks of waxy bituminous material project from weathered surfaces and give the rock a nodular appearance. One of its most distinctive features is the ash-gray weathering residue, in which many well-preserved ostracodes appear. Intercalated beds of calcilutyte are common near the top.

Size classes: macrofossils, microfossils

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 33547: authorized by Steven Holland, entered by Tori Hanson on 02.08.2003, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Tetradium
  -
Tetradium syringoporoides
Polylopia
  - Coleolidae
Polylopia (Salterella) billingsi
Bivalvia
 Cyrtodontida - Cyrtodontidae
Cyrtodonta sp.
Cyrtodonta sp. Billings 1858 clam
Rostroconchia
 Conocardioida -
"Conocardioida indet." = Conocardiida2
"Conocardioida indet." = Conocardiida2 Neumayr 1891
Gastropoda
 Euomphalina - Holopeidae
Raphistomina sp.
Raphistomina sp. Ulrich and Scofield 1897 snail
 Euomphalina - Helicotomidae
Ophiletina sublaxa, aff. Helicotoma tennesseensis, Helicotoma declivis
Ophiletina sublaxa Ulrich and Scofield 1897 snail
subsp. depressa Ulrich and Scofield
aff. Helicotoma tennesseensis Safford 1869 snail
Ulrich and Scofield
Helicotoma declivis Safford 1869 snail
Ulrich
 Murchisoniina - Eotomariidae
Eotomaria canalifera, Eotomaria canalifera
Eotomaria canalifera Ulrich and Scofield 1897 snail
Ulrich [entered as Eotomaria cannalifera]
Eotomaria canalifera Ulrich and Scofield 1897 snail
Ulrich
 Murchisoniina - Trochonematidae
Trochonema bellulum
Trochonema bellulum Ulrich and Scofield 1897 snail
Ulrich
 Murchisoniina - Lophospiridae
"Lophospira aff. ampla" = Paupospira tropidophora, "Lophospira procera" = Lophospira milleri, "Lophospira bicincta" = Lophospira milleri, Lophospira perangulata, Lophospira aff. perangulata1
"Lophospira aff. ampla" = Paupospira tropidophora Meek 1873 snail
Ulrich
"Lophospira procera" = Lophospira milleri Miller 1877 snail
Ulrich
"Lophospira bicincta" = Lophospira milleri Miller 1877 snail
(Hall)
Lophospira perangulata Hall 1847 snail
(Hall)
Lophospira aff. perangulata1 Hall 1847 snail
UIrich
 Bellerophontida - Bucaniidae
Phragmolites cf. triangularis, "Bucania emmonsi" = Loxobucania emmonsi
Phragmolites cf. triangularis Ulrich and Scofield 1897 snail
Ulrich and Scofield
"Bucania emmonsi" = Loxobucania emmonsi Ulrich and Scofield 1897 snail
Ulrich and Scofield
Cephalopoda
 Oncocerida -
Cyrtoceras sp.
 Barrandeocerida - Plectoceratidae
Plectoceras bondi
 Actinocerida - Gonioceratidae
Gonioceras sp.
Gonioceras sp. Hall 1847
 Orthocerida - Kionoceratidae
Kionoceras sp.
Kionoceras sp. Hyatt 1884
Rhynchonellata
 Orthida - Plectorthidae
Mimella sp.
Mimella sp. Cooper 1930
 Orthida - Plaesiomyidae
Multicostella sp.
Strophomenata
 Strophomenida - Strophomenidae
Strophomena filitexta, "Strophomena tenuitesta" = Rhipidomena tenuitesta
Strophomena filitexta Hall 1847
(Hall)
"Strophomena tenuitesta" = Rhipidomena tenuitesta Willard 1928
Willard
 Strophomenida - Syndielasmatidae
Sowerbyites sp.
Sowerbyites sp. Teichert 1937
 Strophomenida - Sowerbyellidae
Sowerbyella cf. negrita, Sowerbyella sp.
Sowerbyella sp. Jones 1928
Trilobita
 Phacopida - Cheiruridae
Pseudosphaerexochus sp.
Pseudosphaerexochus sp. Schmidt 1881 trilobite
 Phacopida - Pterygometopidae
Calliops aff. gracilens
Calliops aff. gracilens trilobite
(Raymond)
Ostracoda
 Leperditicopida - Leperditiidae
Leperditia fabulites
Leperditia fabulites ostracod
subsp. pinguis Butts
1Wagner 1999; 2Wagner 2023