Hyattidina canalis Community in Dyfed, Wales (Silurian of the United Kingdom)

Where: England, United Kingdom (52.0° N, 4.0° W: paleocoordinates 26.3° S, 13.2° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Ludfordian (425.6 - 423.0 Ma)

• Cennen Formation through Tilestones Formation

Environment/lithology: marine; argillaceous siltstone and micaceous sandstone

• "BA 2-3...The range of deposits is comparable with that in prograding delta systems, in which muddy siltstone represents prodelta and mixed lithofacies (sst, siltst, mudst, and local congl) and micaceous sst represent delta front. Areal restriction of community may reflect freshwater influence, an effect not experienced elsewhere in Wales and Welsh Borderland."
• "The community is present in a range of lithofacies from muddy siltstones (Lower Roman Camp Formation) to find micaceous sandstones in the Long Quarry Member of the Tilestones Formation; it is also present in the mixed lithofacies of the Cennen Formation."

Size class: macrofossils

Collection methods: Abundances (present, common, fairly common) are given.

Primary reference: K. E. S. Bradfield. 1999. Fossil communities of the late Ludlow and early Pridoli in Wales and the Welsh Borderland. In A. J. Boucot and J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 370-372 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 23103: authorized by Michael Foote, entered by Michael Foote on 09.07.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Crinoidea indet. Miller 1821 Sea lily
 Murchisoniina - Loxonematidae
Loxonema spp. Phillips 1841 snail
 Bellerophontida - Tropidodiscidae
"Temnodiscus murchisoni" = Pharetrolites murchisoni
"Temnodiscus murchisoni" = Pharetrolites murchisoni de Ferrusac and d'Orbigny 1840 snail
 Ostreida - Pterineidae
 Athyridida - Hyattidinidae
 Rhynchonellida - Trigonirhynchiidae
 Spiriferida - Delthyrididae
Howellella elegans Muir-Wood 1925
 Strophomenida - Strophochonetidae