Where: Wales, United Kingdom (51.8° N, 3.6° W: paleocoordinates 46.8° S, 17.6° W)
• small collection-level geographic resolution
When: Rawtheyan (448.8 - 445.2 Ma)
• no formation name given.
• member-level stratigraphic resolution
Environment/lithology: offshore; lithified, bioturbated, concretionary, pyritic, gray siltstone
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 8370: authorized by John Alroy, entered by Mike Sommers on 10.07.2000, edited by Pete Wagner
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
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Ostracoda | |
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Trilobita | |
Gravicalymene sp. Shirley 1936 trilobite | |
Mucronaspis sp. Destombes 1963 trilobite | |
Opsimasaphus sp. Kielan 1960 trilobite | |
Stenopareia sp. Holm 1886 trilobite | |
Rhynchonellata | |
Cyclospira sp. Hall and Clarke 1893 | |
? Glyptorthis sp. Foerste 1914 | |
? Rhactorthis sp. Williams 1963 | |
Dalmanella sp. Hall and Clarke 1892
Dalmanella cf. sculpta Cooper 1956 | |
Strophomenata | |
Cliftonia cf. oxoplecioides Wright 1963 | |
"Plectambonitacea indet." = Plectambonitoidea
| |
? Bimuria sp. Ulrich and Cooper 1942 | |
"Trimurellina sp." = Kassinella (Trimurellina)
"Trimurellina sp." = Kassinella (Trimurellina) Mitchell 1977 | |
"Strophomenacea indet." = Strophomenoidea
| |
? Eostropheodonta sp. Bancroft 1949 | |
Hyolitha | |
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Sololites sp. Marek 1967 | |
Bryozoa | |
Bryozoa indet. Ehrenberg 1831 | |
Stenolaemata | |
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Cephalopoda | |
Polygrammoceras sp. Foerste 1927 | |
Orthoceras sp. Breynius 1832 | |
Tergomya | |
? Archinacellina sp. Horný 1961 | |
Cyrtolites sp. Conrad 1838 | |
Bivalvia | |
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Deceptrix sp. Fuchs 1919 clam | |
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Gastropoda | |
Gastropoda sp. Cuvier 1795 snail | |
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Tritonophon aff. bohemica Perner 1903 snail | |
Tropidodiscus sp. Meek and Worthen 1866 snail | |
Donaldiella sp. Cossmann 1903 snail | |
Murchisonia sp. d'Archiac and de Verneuil 1841 snail | |
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? Eotomaria sp. Ulrich and Scofield 1897 snail | |
"Pleurotomariacea indet." = Pleurotomarioidea
| |
Holopea sp. Hall 1847 snail | |
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Polychaeta | |
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Crinoidea | |
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unclassified | |
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Cystoidea | |
Cystoidea indet. von Buch 1846 | |
Pterobranchia | |
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unclassified | |
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Scyphozoa | |
Exoconularia sp. Sinclair 1952 jellyfish | |
unclassified | |
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Demospongiae | |
Heterospongia indet. demosponge |