Unit 7, Wills Creek Limestone, Roundtop Section (Silurian to of the United States)

Where: Maryland (39.7° N, 78.2° W: paleocoordinates 32.8° S, 42.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Wills Creek Limestone Formation, Ludlow to Ludlow (427.4 - 419.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified, argillaceous, calcareous sandstone and lithified shale

• Thick-bedded argillaceous and calcareous sandstone and thin-bedded shale.

Primary reference: H. P. Woodward. 1941. Silurian System of West Virginia. West Virginia Geological Survey 14:1-326 [P. Wagner/K. Koverman/K. Koverman]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 41145: authorized by Pete Wagner, entered by Kimberly Koverman on 07.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Ostracoda
 Leperditicopida - Leperditiidae
Gastropoda
 Murchisoniina - Hormotomidae
Rhynchonellata
 Rhynchonellida - Camarotoechiidae
 Rhynchonellida - Uncinulidae