Shagamella minor Assoc., Lower Bringewood, Welsh Borderland (Silurian of the United Kingdom)

Where: England, United Kingdom (52.0° N, 3.0° W: paleocoordinates 27.9° S, 13.0° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Lower Bringewood Formation, Gorstian (427.4 - 425.6 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; gray siltstone

• "...quieter waters of teh shelf edge with a muddier substrate and possible below normal oxygen levels. Probably a BA 4 unit."
• "Gray, thinly flaggy, fairly thinly laminated, fine siltstones, with no pyrite or high carbon content."

Size class: macrofossils

Collection methods: Percent abundances are given, based on 123 collections.

Primary reference: J. D. Lawson. 1999. Atkins' Lower Bringewood associations of Wales and the Welsh Borderland. In A. J. Boucot and J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 380-387 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 23149: authorized by Michael Foote, entered by Michael Foote on 10.07.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Graptolithina
  -
Rhynchonellata
 Pentamerida - Gypidulidae
 Rhynchonellida - Hebetoechiidae
Sphaerirhynchia wilsoni de Sowerby 1816
 Atrypida - Atrypidae
Atrypa reticularis Linnaeus 1758
 Orthida - Dalmanellidae
Strophomenata
 Strophomenida - Strophonellidae
 Strophomenida - Eopholidostrophiidae
 Strophomenida - Strophochonetidae
 Strophomenida - Aegiromenidae
"Aegiria grayi" = Jonesea grayi
"Aegiria grayi" = Jonesea grayi Davidson 1849
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
Trilobita
 Phacopida - Dalmanitidae
Ostracoda
 Palaeocopida - Beyrichiidae
Beyrichiidae indet. Jones 1894 ostracod