Unit 2, Rose Hill Formation, North Mountain Section, Maryland (Silurian to of the United States)

Where: Washington County County, Maryland (39.7° N, 77.9° W: paleocoordinates 29.4° S, 47.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Rose Hill Formation (Clinton Group), Llandovery to Llandovery (443.4 - 423.0 Ma)

• Niagaran

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified, gray shale and lithified sandstone

• Partially concealed; fissiles shale in soil; Coelospira sulcata, Liocalymene clintoni, Calymene niagraensis in sandstone at top.

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 40722: authorized by Pete Wagner, entered by Kimberly Koverman on 28.06.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Phacopida - Calymenidae
Rhynchonellata
 Rhynchonellida - Leptocoeliidae
"Coelospira sulcata" = Eocoelia sulcata
"Coelospira sulcata" = Eocoelia sulcata Prouty 1923