Hesperorthis/Bryozoa assemblage Sample S3, Pebbly Sands, Ffairfach (Ordovician of the United Kingdom)

Where: Wales, United Kingdom (52.0° N, 4.0° W)

• Paleocoordinates: 46.5° S, 88.4° W (Wright 2013)

• small collection-level geographic resolution

When: Didymograptus murchisoni graptolite zone, Ffairfach Pebbly Sands Formation (Ffairfach Group), Late/Upper Llanvirn (463.5 - 460.9 Ma)

• Ffairfach Section Sample S3

•JA: originally entered as Lower Llandeilo and resolved to the formation level, but Upper Llanvirn according to the authors and certainly resolved to the bed level

• bed-level stratigraphic resolution

Environment/lithology: shoreface; sandstone and conglomerate

• Intermittantly bioturbated sandstone and conglomeratic sandstone

Size class: macrofossils

Collection methods: bulk, sieve

Primary reference: A. Williams, M. G. Lockley, and J. M. Hurst. 1981. Benthic palaeocommunities represented in the Ffairfach Group and coeval Ordovician successions of Wales. Palaeontology 24(4):661-694 [A. Miller/P. Novack-Gottshall/J. Alroy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 3317: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 29.07.1999, edited by Arnold Miller

Creative Commons license: CC0 (CC0)

Taxonomic list

• Brachiopod faunal associations
Crinoidea
  -
Crinoidea indet. Miller 1821 Sea lily
Trilobita
  -
Trilobita indet. Walch 1771 trilobite
 Asaphida - Asaphidae
Basilicus tyrannus Murchison 1839 trilobite
Stenolaemata
 Trepostomata -
Trepostomata indet. Ulrich 1882
Rhynchonellata
 Orthida - Hesperorthidae
Strophomenata
 Strophomenida - Rafinesquinidae
Hexactinellida
 Lyssacinosa - Stiodermatidae