Also known as Sk.lewisii-Cyrtia exporrecta Assoc., low Wether Law Linn Fm., Pentland Hills
Where: Scotland, United Kingdom (55.8° N, 3.4° W: paleocoordinates 15.8° S, 20.8° W)
• coordinate based on nearby landmark
• local area-level geographic resolution
When: Cyrtograptus lapworthi graptolite zone, Grain Heads Siltstone Member (Wether Law Linn Formation), Telychian (438.5 - 433.4 Ma)
• Originally given as Lower Member of Wether Law Linn.
• member-level stratigraphic resolution
Environment/lithology: marine; bioturbated mudstone and bioturbated siltstone
•Overall sequence of sediments treated here "represents a marine regression from offshore turbidite facies, through shallow water facies with abundant flora and fauna, to terrestrial red beds, of Old Red Sandstone facies. Sediments belonging to the highest Cock Rig Formation and Lower Member of the Wether Law LInn Formation constitute part of the shallow water marine facies."
Size class: macrofossils
Collection methods: Author gives percent abundance data, averaged over numerous sampled blocks.
Primary reference: G. Robertson. 1999. Upper Llandovery fossil associations in the Pentland HIlls, Scotland. In A. J. Boucot and J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 408-418 [M. Foote/M. Foote/M. Foote]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 23299: authorized by Michael Foote, entered by Michael Foote on 11.07.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
Anthozoa | |
Rugosa indet. horn coral | |
Cephalopoda | |
Nautiloidea indet. Agassiz 1847 nautiloid | |
Gastropoda | |
? Liospira simulans Salter 1861 snail | |
"? Gyronema salteri" = Hecetastoma salteri
"? Gyronema salteri" = Hecetastoma salteri Haswell 1865 snail | |
Bivalvia | |
Mytilarca sp. Hall and Whitfield 1869 clam | |
Strophomenata | |
Coolinia applanata Salter 1846 | |
Eoplectodonta penkillensis Reed 1917 | |
Pentlandina tartana Bancroft 1949 | |
Leptaena aff. purpurea Cocks 1968 | |
Rhynchonellata | |
Dicoelosia cf. verneuiliana Beecher 1891 | |
"Isorthis mackenziei" = Isorthis (Ovalella) mackenziei
"Isorthis mackenziei" = Isorthis (Ovalella) mackenziei Boucot et al. 1966 | |
Skenidioides lewisii Davidson 1848 | |
Atrypa (Atrypa) sp. Dalman 1828 | |
"Cyrtia exporrecta" = Cyrtia exporrectus
"Cyrtia exporrecta" = Cyrtia exporrectus Wahlenberg 1818 | |
Nucleospira pisum Sowerby 1839 | |
Lingulata | |
Lingula sp. BruguiƩre 1797 | |
Stenolaemata | |
Cystoporata indet. Astrova 1964 | |
Ptilodictya sp. Lonsdale 1839 | |
? Helopora sp. Hall 1851 | |
? Eridotrypa sp. Ulrich 1893 | |
Polychaeta | |
Machaeridia indet. scale worm | |
Ostracoda | |
Trilobita | |
Encrinurus expansus Haswell 1865 trilobite | |
Acernaspis (Eskaspis) sufferta Lamont 1947 trilobite | |
unclassified | |
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