Dalmanella Assem Phase 2 Samp F43, Flags and Grits, Ffairfach Group (Ordovician of the United Kingdom)

Where: United Kingdom (52.0° N, 4.0° W: paleocoordinates 58.0° S, 19.7° W)

• small collection-level geographic resolution

When: Didymograptus murchisoni zone, Ffairfach Flags and Grits Formation (Ffairfach Group), Late/Upper Llanvirn (463.5 - 460.9 Ma)

• Ffairfach Section Sample F43

•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; lithified, pebbly 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 69575: authorized by Arnold Miller, entered by Arnold Miller on 27.02.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

• Brachiopod faunal associations
Hexactinellida
 Lyssacinosa - Stiodermatidae
Strophomenata
 Orthotetida - Triplesiidae
Triplesia edgelliana Davidson 1869
 Strophomenida - Sowerbyellidae
"Sowerbyella antiqua" = Sowerbyella (Sowerbyella) antiqua
"Sowerbyella antiqua" = Sowerbyella (Sowerbyella) antiqua Jones 1928
 Strophomenida - Rafinesquinidae
Rhynchonellata
 Orthida - Dalmanellidae
Dalmanella parva Williams 1949
 Orthida - Harknessellidae
Horderleyella sp. Bancroft 1928
Inarticulata
  -
Lingulata
 Lingulida - Paterulidae
Paterula cf. bohemica Barrande 1879
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
Stenolaemata
 Cryptostomata -
 Trepostomata -
Trepostomata indet. Ulrich 1882
 Trepostomida - Monticuliporidae
? Prasopora sp. Nicholson and Etheridge 1877
Ostracoda
 Hollinocopida - Tetradellidae
Tallinnella sp. Opik 1937 ostracod
[entered as Talinella sp.]
Trilobita
  -
Trilobita indet. Walch 1771 trilobite
 Trinucleida - Trinucleidae
Marrolithus sp. Bancroft 1929 trilobite
 Asaphida - Asaphidae
Basilicus tyrannus Murchison 1839 trilobite
 Phacopida - Calymenidae
"Flexicalymene cambriensis" = Flexicalymene cambrensis
"Flexicalymene cambriensis" = Flexicalymene cambrensis Salter 1865 trilobite