East of Wenallt #3 (Ordovician of the United Kingdom)

Where: Wales, United Kingdom (51.8° N, 3.6° W: paleocoordinates 39.1° S, 17.0° W)

• small collection-level geographic resolution

When: Ooid Member (Wenallt Formation), Hirnantian (445.2 - 443.4 Ma)

• member-level stratigraphic resolution

Environment/lithology: offshore; lithified, ooidal, shelly/skeletal, argillaceous, sandy siltstone and sandstone

• sandy and muddy siltstones with ooids alternating with fine to very fine speckly sandstones. abundant fragmentary pelmatozoan and bryozoan material.

Primary reference: A. Williams and A. D. Wright. 1981. The Ordovician-Silurian boundary in the Garth area of southwest Powys, Wales. Geological Journal 16:1-39 [J. Alroy/M. Sommers/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 8387: authorized by John Alroy, entered by Mike Sommers on 10.07.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
? Diplonothis sp., Pelmatozoa indet.
Pelmatozoa indet. Leuckart 1848
pelmatozoan ossicles
Cystoidea
  -
Cystoidea indet.
Cystoidea indet. von Buch 1846
cystoid plates
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily
ossicles
 Rhombifera - Cheirocrinidae
? Cheirocrinus sp.
? Cheirocrinus sp. Eichwald 1856
plate
Hyolitha
  -
Hyolitha indet.
Hyolitha indet. Marek 1963
hyolith
Craniata
 Craniopsida - Craniopsidae
Paracraniops sp.
Paracraniops sp. Williams 1963
Strophomenata
 Orthotetida - Triplesiidae
Cliftonia sp.
Cliftonia sp. Foerste 1909
 Strophomenida - Leptestiidae
Sampo sp.
Sampo sp. Opik 1933
 Strophomenida -
"Strophomenacea indet." = Strophomenoidea
"Strophomenacea indet." = Strophomenoidea King 1846
strophomenacea
 Strophomenida - Furcitellidae
Katastrophomena sp.
 Strophomenida - Leptostrophiidae
Eostropheodonta hirnantensis
 Strophomenida - Rafinesquinidae
Leptaena sp.
Leptaena sp. Dalman 1828
Rhynchonellata
 Athyridida - Meristellidae
Hindella incipiens
Hindella incipiens Williams 1951
 Rhynchonellida - Rhynchotrematidae
? Rhynchotrema sp.
 Orthida - Draboviidae
? Kinnella sp., ? Hirnantia sp., Hirnantia sagittifera
? Kinnella sp. Bergström 1968
? Hirnantia sp. Lamont 1935
 Orthida - Dalmanellidae
Dalmanellidae indet., Dalmanella sp., ? Howellites sp.
Dalmanellidae indet. Schuchert 1913
dalmanellid
Dalmanella sp. Hall and Clarke 1892
? Howellites sp. Bancroft 1945
 Orthida - Glyptorthidae
Glyptorthis sp.
Glyptorthis sp. Foerste 1914
 Orthida - Orthidiellidae
? Portranella sp.
? Portranella sp. Wright 1964
 Orthida -
"Orthacea indet." = Orthoidea
"Orthacea indet." = Orthoidea Woodward 1852
 Orthida - Orthidae
Orthambonites sp.
Orthambonites sp. Pander 1830
 Orthida - Hesperorthidae
? Ptychopleurella sp., Dolerorthis sp.
? Ptychopleurella sp. Schuchert and Cooper 1931
Dolerorthis sp. Schuchert and Cooper 1931
 Orthida - Platystrophiidae
Platystrophia sp.
 Orthida - Plectorthidae
? Plectorthis sp.
? Plectorthis sp. Hall and Clarke 1892
Bryozoa
  -
Bryozoa indet.
Bryozoa indet. Ehrenberg 1831
Stenolaemata
 Cyclostomata -
Cyclostomata indet.
Cyclostomata indet. Busk 1852
cyclostome
 Cryptostomata -
Cryptostomata indet.
Cryptostomata indet. Vine 1884
cryptostome
 Trepostomata -
Trepostomata indet.
Trepostomata indet. Ulrich 1882
trepostome
Gastropoda
  -
Gastropoda indet.
Gastropoda indet. Cuvier 1795 snail
Bivalvia
 Nuculida -
Nuculacea indet.
Nuculacea indet. Gray 1824 clam
nuculacean
Ostracoda
 Podocopa -
Palaeocopida indet.
Palaeocopida indet. Henningsmoen 1953 ostracod
palaeocope, 1x reticulate palaeocope
Trilobita
  -
Trilobita indet.
Trilobita indet. Walch 1771 trilobite
Anthozoa
 Rugosa -
Rugosa indet.
Rugosa indet. horn coral
solitary rugose coral
 Heliolitida - Halysitidae
Halysitidae indet.
Halysitidae indet. Milne-Edwards and Haime 1849 tabulate coral
halysitid
unclassified
  -
Problematica indet.
Problematica indet. Andrews 1970
what else is new