Unit 4, McKenzie Formation, North Rose Hill Section (Silurian to of the United States)
Where: Allegany County County, Maryland (39.7° N, 78.8° W: paleocoordinates 29.1° S, 47.6° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: McKenzie Formation, Llandovery to Llandovery (443.4 - 423.0 Ma)
• group of beds-level stratigraphic resolution
Environment/lithology: lithified shale and lithified limestone
• Shale with numerous thin bands of limestone.
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 41091: authorized by Pete Wagner, entered by Kimberly Koverman on 06.07.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| Gastropoda | |
"Hormotoma marylandica" = Gyrodoma marylandica, Hormotoma hopkinsi
"Hormotoma marylandica" = Gyrodoma marylandica Clarke and Swartz 1913 snail
Hormotoma hopkinsi snail | |
| Cephalopoda | |
|
Orthoceras sp. Breynius 1832 | |
| Ostracoda | |
|
Dizygopleura subdivisa ostracod
Dizygopleura intermedia ostracod | |