abandoned slate quarry, near Frederick, Marcellus Shale, Washington Co., MD (Devonian of the United States)
Where: Washington County, Maryland (39.6° N, 78.0° W: paleocoordinates 39.8° S, 26.6° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Marcellus Formation, Givetian (387.7 - 382.7 Ma)
• formation-level stratigraphic resolution
Environment/lithology: offshore; gray, silty shale
• fissile, medium to dark gray silty shale
Primary reference: R. K. Pabian and H. L. Strimple. 1976. Middle Devonian Crinoids from western Maryland. Journal of Paleontology 50(4):759-762 [A. Miller/K. Layou]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 10453: authorized by Arnold Miller, entered by Karen Layou on 17.04.2001
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| Crinoidea | |
|
Arthroacantha cf. punctobrachiata Sea lily | |
|
Lasiocrinus cf. scoparius Sea lily | |
| Rhynchonellata | |
|
Leiorhynchus sp. Hall 1860 | |
|
Cyrtina sp. Davidson 1858 | |
|
Spirifer sp. Sowerby 1818 | |
| Bivalvia | |
|
Nuculoidea indet. Williams and Berger 1916 nut clam | |