Also known as River Yarrow, Gastrioceras cumbriense Marine Band, shale Unit 3, the acme shales
Where: England, United Kingdom (53.7° N, 2.7° W: paleocoordinates 1.2° S, 6.1° E)
• coordinate based on political unit
• outcrop-level geographic resolution
When: Pendleian to Pendleian (330.9 - 318.7 Ma)
• The Gastrioceras cumbriense Marine Band generally does not exceed 60cm in thickness. The band is split into five units, the lower barren shales (Unit 1), the advance shales (Unit 2), the acme shales (Unit 3), the retreat shales (Unit 4), and the upper barren shales (Unit 5).
• group of beds-level stratigraphic resolution
Environment/lithology: offshore; lithified, pyritic, black shale
Size class: macrofossils
Primary reference: P. B. Wignall. 1987. A biofacies analysis of the Gastroceras cumbriense marine band (Namurian) of the central Pennines. Proceedings of the Yorkshire Geological Society 46(2):111-121 [J. Alroy/C. Simpson/C. Simpson]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 41198: authorized by John Alroy, entered by Carl Simpson on 08.07.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Polypodiopsida | |
cf. Calamites sp. Suckow 1784 | |
Gnathostomata | |
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Osteichthyes | |
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Gastropoda | |
Angyomphalus sp. Cossmann 1915 snail | |
Bellerophontida indet. Ulrich and Scofield 1897 snail | |
Bivalvia | |
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Caneyella multirugata oyster | |
Posidonia sp. Bronn 1828 oyster | |
Dunbarella elegans scallop | |
Cephalopoda | |
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Anthracoceratites sp. Ramsbottom 1970 ammonite | |
Gastrioceras cumbriense ammonite
Gastrioceras crenulatum ammonite
Gastrioceras aff. coronatum ammonite |