Where: Wales, United Kingdom (52.1° N, 3.6° W: paleocoordinates 35.6° S, 16.8° W)
• coordinate based on political unit
• small collection-level geographic resolution
When: Trefawr Formation, Rhuddanian to Rhuddanian (443.4 - 438.5 Ma)
• Unless a conodont zone was explicitly stated, a Late Rhudd - Late Aeron age was entered because of the statement these beds are all "pre-sedgwickii Zone." Localities are referred to the measured transects f2, h1, i2, i3, j2, and l, of Cocks et al. 1984, p178, fig.3)
• bed-level stratigraphic resolution
Environment/lithology: marine; lithified mudstone and sandstone
Collection methods: bulk,
• "... a single collection (from bulk material) [was made] from each locality, identifying and recording all fossils encountered during break up of the rock... [sacrificing commoner taxa in continued searching, or preserving rarer specimens and not breaking the rock further]...figures obtained for relative frequencies of the taxa are prob accurate...estimates of volumetric abundance...are prob too low." Sample: 8.7 kg.
Primary reference: J. T. Temple. 1987. Early Llandovery brachiopods of Wales. Palaeontological Society Monographs 139(572):1-137 [J. Alroy/M. Sommers/M. Uhen]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 4988: authorized by John Alroy, entered by Mike Sommers on 26.08.1999
Creative Commons license: CC BY (attribution)
Taxonomic list
Lingulata | |
"Lingulacea indet." = Linguloidea
"Lingulacea indet." = Linguloidea Menke 1828 | |
Strophomenata | |
"Leptaena haverfordensis" = Leptaena (Leptaena) haverfordensis
"Leptaena haverfordensis" = Leptaena (Leptaena) haverfordensis Bancroft 1949 | |
Rhynchonellata | |
| |
Stegerhynchus pusillum de Sowerby and Murchison 1839 | |
"Clorinda ? undata" = Clorilamnulella undata
"Clorinda ? undata" = Clorilamnulella undata de Sowerby and Murchison 1839 |