D. navicula-I. orbicularis-S. minor Association of the Welsh Borderland (Silurian of the United Kingdom)

Where: England, United Kingdom (52.0° N, 2.0° W: paleocoordinates 26.1° S, 11.8° W)

• coordinate based on political unit

• basin-level geographic resolution

When: Lower Leintwardine Formation, Ludfordian (425.6 - 423.0 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; graded, lag, calcareous siltstone

• "Subtidal mid-shelf areas in sheet-laminated siltstone subfacies of the calcareous siltstone facies, across to offshore shelf areas where these facies grade laterally into laminated siltstone facies with fewer and only very thin (less than 3 cm) graded silt units....episodes of surface scouring by storm ebb currents, followed by rapid burial of coarse skeletal lags and deposition of finely laminated, lenticular silt sheets...limited sed. transport and faunal mixing...BA 3"
• "Subtidal mid-shelf areas in sheet-laminated siltstone subfacies of the calcareous siltstone facies, across to offshore shelf areas where these facies grade laterally into laminated siltstone facies with fewer and only very thin (less than 3 cm) graded silt units....episodes of surface scouring by storm ebb currents, followed by rapid burial of coarse skeletal lags and deposition of finely laminated, lenticular silt sheets...

Size class: macrofossils

Primary reference: L. Cherns. 1999. Faunal associations of the Lower Leintwardine Formation of the Anglo-Welsh Basin. In A. J. Boucot and J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 373-379 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 23110: authorized by Michael Foote, entered by Michael Foote on 09.07.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Cardiidia - Grammysiidae
Fuchsella amygdalina Sowerby 1827 clam
Brachiopoda
  -
Brachiopoda indet. Cuvier 1805
skeletal sand
Strophomenata
 Strophomenida - Strophochonetidae
Rhynchonellata
 Rhynchonellida - Hebetoechiidae
Sphaerirhynchia wilsoni de Sowerby 1816
 Orthida - Dalmanellidae
 Orthida - Draboviidae
Salopina lunata Sowerby 1839
 Spiriferida - Delthyrididae
Howellella elegans Muir-Wood 1925
 Athyridida - Hyattidinidae
 Athyridida - Dayiidae
Dayia navicula Sowerby 1839
Lingulata
 Lingulida - Lingulidae