Where: Wales, United Kingdom (51.8° N, 3.6° W: paleocoordinates 39.1° S, 17.0° W)
• small collection-level geographic resolution
When: Ooid Member (Wenallt Formation), Hirnantian (445.2 - 443.4 Ma)
• member-level stratigraphic resolution
Environment/lithology: offshore; lithified, ooidal, shelly/skeletal, argillaceous, sandy siltstone and sandstone
Primary reference: A. Williams and A. D. Wright. 1981. The Ordovician-Silurian boundary in the Garth area of southwest Powys, Wales. Geological Journal 16:1-39 [J. Alroy/M. Sommers/P. Wagner]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 8388: authorized by John Alroy, entered by Mike Sommers on 10.07.2000
Creative Commons license: CC BY (attribution)
Taxonomic list
| unclassified | |
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| Cystoidea | |
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| Rhynchonellata | |
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Hindella incipiens Williams 1951 | |
"Orthacea indet." = Orthoidea
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Dalmanella testudinaria Dalman 1828 | |
| Strophomenata | |
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Eostropheodonta hirnantensis M'Coy 1851 | |
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Leptaena rugosa Dalman 1828 | |
"Strophomenacea indet." = Strophomenoidea
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Cliftonia sp. Foerste 1909 | |
| Stenolaemata | |
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Escharopora sp. Hall 1847 | |
| Trilobita | |
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Trilobita indet. Walch 1771 trilobite | |