Southwest flank of east Weneallt #4 (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: Speckly Sandstone Member (Wenallt Formation), Hirnantian (445.2 - 443.4 Ma)

• member-level stratigraphic resolution

Environment/lithology: offshore; lithified, burrowed, pebbly, brown, gray, blue, calcareous sandstone

• blue-grey, finely crossbedded and evenly laminar calcareous sandstones weathering with chocolate brown tinges. mud flasers; burrows; pebbles rarely occur.

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 8403: authorized by John Alroy, entered by Mike Sommers on 11.07.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Leptestiinidae indet.
Leptestiinidae indet.
leptestiinid
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily
ossicles
unclassified
  -
Pelmatozoa indet.
Pelmatozoa indet. Leuckart 1848
ossicles
Bryozoa
  -
Bryozoa indet.
Bryozoa indet. Ehrenberg 1831
Stenolaemata
 Cryptostomata -
Cryptostomata indet.
Cryptostomata indet. Vine 1884
cryptostome
 Cryptostomata - Ptilodictyidae
Ptilodictya sp.
Ptilodictya sp. Lonsdale 1839
 Cryptostomata - Rhinidictyidae
? Pachydictya sp.
? Pachydictya sp. Ulrich 1882
 Trepostomata -
Trepostomata indet.
Trepostomata indet. Ulrich 1882
trepostome
Rhynchonellata
 Athyridida - Meristellidae
Hindella incipiens
Hindella incipiens Williams 1951
 Orthida - Draboviidae
"? Kinnella kielanae" = Kinnella medlicotti
"? Kinnella kielanae" = Kinnella medlicotti Reed 1915
 Orthida - Dalmanellidae
Dalmanellidae indet., Dalmanella sp.
Dalmanellidae indet. Schuchert 1913
dalmanellid
Dalmanella sp. Hall and Clarke 1892
Strophomenata
 Strophomenida - Sowerbyellidae
Eoplectodonta sp.
Eoplectodonta sp. Kozlowski 1929
 Strophomenida -
"Plectambonitacea indet." = Plectambonitoidea
"Plectambonitacea indet." = Plectambonitoidea Jones 1928
plectambonitacean
 Strophomenida - Leptostrophiidae
Eostropheodonta hirnantensis
 Strophomenida - Rafinesquinidae
Leptaena sp.
Leptaena sp. Dalman 1828
 Strophomenida -
"Strophomenacea indet." = Strophomenoidea
"Strophomenacea indet." = Strophomenoidea King 1846
strophomenacean
Craniata
 Craniopsida - Craniopsidae
Paracraniops sp.
Paracraniops sp. Williams 1963
Tentaculita
 Cornulitida - Cornulitidae
Cornulites sp.
Cornulites sp. Schlotheim 1820
Gastropoda
  -
Gastropoda indet.
Gastropoda indet. Cuvier 1795 snail
high spired gastropod
Ostracoda
 Podocopa -
Palaeocopida indet.
Palaeocopida indet. Henningsmoen 1953 ostracod
palaeocope
Trilobita
 Phacopida - Dalmanitidae
Mucronaspis sp.
Mucronaspis sp. Destombes 1963 trilobite