Sericoidea Association, Bala, Wales, UK (Ordovician to of the United Kingdom)

Where: Wales, United Kingdom (53.0° N, 4.0° W: paleocoordinates 50.0° S, 18.4° W)

• local area-level geographic resolution

When: Dyfi Mudstone Member (Nod Glas Formation), Soudleyan to Soudleyan (458.4 - 454.0 Ma)

• member-level stratigraphic resolution

Environment/lithology: offshore; lithified, pyritic shale and limestone

• Dark graptolitic and pyritic mudstones with occasional limestone nodules

Size class: macrofossils

Primary reference: M. G. Lockley. 1980. The Caradoc faunal associations of the area between Bala and Dines, North Wales. Bulletin of the British Museum of Natural History (Geology) 33(3):165-235 [A. Miller/P. Novack-Gottshall]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 3373: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 31.07.1999, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Gastropoda
 Bellerophontida -
Bellerophontoidea indet.
Bellerophontoidea indet. M'Coy 1851 snail
Strophomenata
 Strophomenida - Aegiromenidae
Sericoidea sp.
Sericoidea sp. Lindström 1953
Rhynchonellata
 Orthida - Harknessellidae
Reuschella sp.
Reuschella sp. Bancroft 1928
 Orthida - Dalmanellidae
? Howellites sp.
? Howellites sp. Bancroft 1945
originally entered as "Howellites? sp."
 Atrypida - Cyclospiridae
Cyclospira sp.
Cyclospira sp. Hall and Clarke 1893
Trilobita
 Trinucleida - Trinucleidae
Broeggerolithus sp.
Broeggerolithus sp. Lamont 1935 trilobite
 Phacopida - Acastidae
Kloucekia sp.
Kloucekia sp. Delo 1935 trilobite