Glyn Ceiriog, Glyn Fm. (Ordovician to of the United Kingdom)

Where: Wales, United Kingdom (52.9° N, 3.2° W: paleocoordinates 44.6° S, 17.0° W)

• local area-level geographic resolution

When: Glyn Formation, Rawtheyan to Rawtheyan (448.8 - 443.4 Ma)

• member-level stratigraphic resolution

Environment/lithology: offshore; lithified, calcareous sandstone and siltstone

• 21-70 m fine to coarse sandstones with thin siltstones and a locally developed limestone...at the base of the fm. on mydydd fron frys.

Primary reference: N. Hiller. 1981. The Ashgill rocks of the Glyn Ceirog district, North Wales. Geological Journal 16:181-200 [J. Alroy/M. Sommers/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 8292: authorized by John Alroy, entered by Mike Sommers on 05.07.2000, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Anthozoa
 Stauriida - Petraiidae
Petraia sp.
Petraia sp. Münster 1839 horn coral
Trilobita
 Phacopida - Pterygometopidae
Calyptaulax sp.
Calyptaulax sp. Cooper 1930 trilobite
 Phacopida - Encrinuridae
Encrinurus sp.
Encrinurus sp. Emmrich 1844 trilobite
 Phacopida - Calymenidae
"Flexicalymene quadrata" = Gravicalymene quadrata
"Flexicalymene quadrata" = Gravicalymene quadrata King 1923 trilobite
Strophomenata
 Strophomenida - Leptestiidae
"Diambonia cf. gibbosa" = Leangella, Sampo transversa1
"Diambonia cf. gibbosa" = Leangella
Sampo transversa1 Cocks 2014
 Strophomenida - Sowerbyellidae
Eoplectodonta sp., Sowerbyella cf. sladensis
Eoplectodonta sp. Kozlowski 1929
 Strophomenida - Rafinesquinidae
Leptaena cf. rugosa
Leptaena cf. rugosa Dalman 1828
 Strophomenida - Leptostrophiidae
Eostropheodonta hirnantensis
 Strophomenida - Furcitellidae
? Luhaia sp.
? Luhaia sp. Roomusoks 1956
 Orthotetida - Triplesiidae
Triplesia hintsae1
Triplesia hintsae1 Cocks 2014
 Billingsellida - Clitambonitidae
Vellamo cf. diversa
Vellamo cf. diversa Shaler 1865
Rhynchonellata
 Protorthida - Skenidiidae
Skenidioides cf. asteroideus
 Orthida - Dalmanellidae
Dalmanella cf. testudinaria
 Orthida - Dicoelosiidae
Dicoelosia cf. indenta
 Orthida - Draboviidae
Hirnantia ? sagittifera
 Orthida - Plectorthidae
Schizophorella cf. fallax
Schizophorella cf. fallax Salter 1846
ssp. silicis
 Orthida - Glyptorthidae
Glyptorthis cf. maritima
 Orthida - Productorthidae
Nicolella actoniae
Nicolella actoniae de Sowerby and Murchison 1839
 Orthida - Plaesiomyidae
Plaesiomys sp.
Plaesiomys sp. Hall and Clarke 1892
 Orthida - Hesperorthidae
Hesperorthis sp., Ptychopleurella sp.
Hesperorthis sp. Schuchert and Cooper 1931
Ptychopleurella sp. Schuchert and Cooper 1931
Craniata
 Trimerellida - Trimerellidae
Eodinobolus sp.
Eodinobolus sp. Rowell 1963
Bivalvia
 Nuculida -
Nuculacea indet.
Nuculacea indet. Gray 1824 clam
two indet forms
Gastropoda
  -
Gastropoda indet.2
Gastropoda indet.2 Cuvier 1795 snail
 Murchisoniina - Loxonematidae
Loxonematidae indet.
Loxonematidae indet. Koken 1889 snail
 Euomphalina - Euomphalidae
Straparollus sp.
Straparollus sp. de Montfort 1810 snail
 Bellerophontida - Bellerophontidae
Bellerophontidae indet.
Bellerophontidae indet. M'Coy 1851 snail
1Cocks 2014; 2Wagner 2023