PBDB Collection

Pounding Mill Branch: Ashbyan, Virginia

List of taxa

Where & when

Geology

Taphonomy & methods

Metadata & references

Taxonomic list

Coleolidae

	Polylopia (Salterella) billingsi
	(Safford)
Gastropoda - Bellerophontida - Bucaniidae

	Bucania emmonsi Ulrich and Scofield 1897
	Ulrich and Scofield

	Phragmolites cf. triangularis (Ulrich and Scofield 1897)
	(Ulrich and Scofield)
Gastropoda - Murchisoniina - Trochonematidae

	Trochonema bellulum Ulrich and Scofield 1897
	Ulrich
Gastropoda - Murchisoniina - Lophospiridae

	Lophospira aff. ampla Ulrich and Scofield 1897
	Ulrich
	= Lophospiridae indet. Wenz 1938	Wagner 2023
	Paupospira ampla is a Richmondian species.

	aff. Lophospira centralis Ulrich and Scofield 1897
	Ulrich
	= Lophospira aff. perangulata Hall 1847	Wagner 1999

	Lophospira perangulata (Hall 1847)
	(Hall)

	Lophospira procera Ulrich and Scofield 1897
	Ulrich

	Lophospira bicincta (Hall 1847)
	(Hall)
Gastropoda - Murchisoniina - Eotomariidae

	Eotomaria canalifera Ulrich and Scofield 1897
	Ulrich
Gastropoda - Euomphalina - Helicotomidae

	Ophiletina sublaxa Ulrich and Scofield 1897
	subsp. depressa

	Helicotoma declivis Safford 1869
	Ulrich

	aff. Helicotoma tennesseensis Safford 1869
	Ulrich and Scofield
Gastropoda - Euomphalina - Holopeidae

	Raphistomina sp. Ulrich and Scofield 1897
Rostroconchia - Conocardiida

	Conocardium sp. Bronn 1835
	= Conocardioidea indet. Miller 1889	Wagner 2023
Cephalopoda - Actinocerida - Gonioceratidae

	Gonioceras sp. Hall 1847
Cephalopoda - Orthocerida - Kionoceratidae

	Kionoceras sp. Hyatt 1884
Cephalopoda - Barrandeocerida - Plectoceratidae

	Plectoceras bondi
	(Safford)
Cephalopoda - Oncocerida

	Cyrtoceras sp.
Bivalvia - Cyrtodontida - Cyrtodontidae

	Cyrtodonta sp. Billings 1858
Rhynchonellata - Orthida - Plaesiomyidae

	Multicostella sp.
Rhynchonellata - Orthida - Plectorthidae

	Mimella sp. Cooper 1930
Strophomenata - Strophomenida - Sowerbyellidae

	Sowerbyella cf. negrita
	(Willard)

	Sowerbyella sp. Jones 1928
Strophomenata - Strophomenida - Syndielasmatidae

	Sowerbyites sp. Teichert 1937
Strophomenata - Strophomenida - Strophomenidae

	Strophomena filitexta (Hall 1847)
	(Hall)

	Strophomena tenuitesta Willard 1928
	Willard
Trilobita - Phacopida - Pterygometopidae

	Calliops aff. gracilens
	(Raymond)
Trilobita - Phacopida - Cheiruridae

	Pseudosphaerexochus sp. (Schmidt 1881)
Ostracoda - Leperditicopida - Leperditiidae

	Leperditia fabulites
	subsp. pinguis Butts
unclassified

	Tetradium syringoporoides
	Ulrich
see common names

Country:	United States	State/province:	Virginia	County:	Tazewell
Coordinates:	37.1° North, 81.7° West (view map)
Paleocoordinates:	19.8° South, 113.1° West (Wright 2013)
Basis of coordinate:	estimated from map
Geographic resolution:	outcrop

Period:	Ordovician	Epoch:	Late Ordovician
10 m.y. bin:	Ordovician 4-5
Key time interval:	Ashbyan
Age range of interval:	457 - 449.8 m.y. ago

Formation:	Cliffield	Member:	Peery Limestone
Stratigraphic resolution:	member
Stratigraphy comments: Ashbyan

Primary lithology:	black,gray argillaceous "limestone"
Includes fossils?	Y
Lithology description: 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.
Environment:	carbonate indet.

Modes of preservation:	body
Size of fossils:	macrofossils,microfossils

Collection methods:	field collection
Reason for describing collection:	biostratigraphic analysis

Also known as:	Cliffield Formation, Peery Limestone Member, Pounding Mill Branch
Database number:	33546
Authorizer:	S. Holland, P. Wagner	Enterer:	T. Hanson, P. Wagner
Modifier:	P. Wagner	Research group:	marine invertebrate
Created:	2003-08-02 16:34:36	Last modified:	2025-02-22 15:12:02
Access level:	the public	Released:	2003-08-02 16:34:36
Creative Commons license:	CC0

9128		P. J. Wagner. 1999. The utility of fossil data in phylogenetic analyses: a likelihood example using Ordovician-Silurian species of the Lophospiridae (Gastropoda: Murchisoniina). American Malacological Bulletin 15(1):1-31 [P. Wagner/P. Wagner/P. Wagner]
9042		P. J. Wagner. 2023. Paleozoic Gastropod, Rostroconch, Helcionelloid and Tergomyan Database (2006 - 2023). [P. Wagner/P. Wagner/P. Wagner]