North Wales Rawtheyan Assemblage 4C, Crugan Mudstone, England (Ordovician of the United Kingdom)

Where: England, United Kingdom (53.0° N, 4.0° W)

• Paleocoordinates: 42.2° S, 77.9° W (Wright 2013)

• local area-level geographic resolution

When: Crugan Mudstone Formation, Rawtheyan (448.8 - 445.2 Ma)

• formation-level stratigraphic resolution

Environment/lithology: submarine fan; lithified, burrowed, gray shale

• Brown-grey, campact ludstone with some Chondrites and mottling

Primary reference: D. Price. 1981. Ashigill trilobite faunas from the Llyn Peninsula, North Wales, U.K. Geological Magazine 16(3):201-216 [A. Miller/P. Novack-Gottshall]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 3666: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 06.08.1999

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Scyphozoa
 Conulariida -
Conulariida indet.
Conulariida indet. Miller and Gurley 1896 jellyfish
Artiopoda
 Agnostida - Metagnostidae
Arthrorhachis sp.
Arthrorhachis sp. Hawle and Corda 1847
Trilobita
 Phacopida - Encrinuridae
Encrinuroides sp., Dindymene sp., Paracybeloides sp.
Encrinuroides sp. Reed 1931 trilobite
Dindymene sp. Hawle and Corda 1847 trilobite
Paracybeloides sp. Hupé 1955 trilobite
 Phacopida - Cheiruridae
Ceraurinella sp., Pseudosphaerexochus sp.
Ceraurinella sp. Cooper 1953 trilobite
Pseudosphaerexochus sp. Schmidt 1881 trilobite
 Phacopida - Calymenidae
Gravicalymene sp.
Gravicalymene sp. Shirley 1936 trilobite
 Phacopida - Pterygometopidae
Liocnemis sp.
Liocnemis sp. Kielan 1960 trilobite
 Phacopida - Dalmanitidae
Duftonia sp.
Duftonia sp. Dean 1959 trilobite
 Trinucleida - Raphiophoridae
Raphiophorus sp., Lonchodomas sp.
Raphiophorus sp. Angelin 1854 trilobite
Lonchodomas sp. Angelin 1854 trilobite
 Trinucleida - Trinucleidae
Tretaspis sp., Nankinolithus sp.
Tretaspis sp. M'Coy 1849 trilobite
Nankinolithus sp. Lu 1957 trilobite
 Trinucleida - Dionididae
Dionide sp.
Dionide sp. Barrande 1847 trilobite
 Asaphida - Asaphidae
Opsimasaphus sp.
Opsimasaphus sp. Kielan 1960 trilobite
 Asaphida - Remopleurididae
Amphitryon sp.
Amphitryon sp. Hawle and Corda 1874 trilobite
 Asaphida - Cyclopygidae
? Microparia sp., Cyclopyge sp.
? Microparia sp. Hawle and Corda 1847 trilobite
originally entered as "Microparia? sp."
Cyclopyge sp. Hawle and Corda 1847 trilobite
 Corynexochida - Styginidae
Phillipsinella sp.
Phillipsinella sp. Novak 1885 trilobite
 Corynexochida - Illaenidae
? Stenopareia sp.
? Stenopareia sp. Holm 1886 trilobite
originally entered as "Stenopareia? sp."
 Corynexochida - Panderiidae
Panderia sp.
Panderia sp. Volborth 1863 trilobite
 Lichida - Lichidae
? Platylichas sp.
? Platylichas sp. Gürich 1901 trilobite
originally entered as "Platylichas? sp."
Rhynchonellata
 Atrypida - Anazygidae
? Zygospira sp.
? Zygospira sp. Hall 1862
originally entered as "Zygospira? sp."
 Orthida - Dalmanellidae
Dedzetina sp.
Strophomenata
 Strophomenida - Foliomenidae
Foliomena sp.
Foliomena sp. Havlicek 1952
 Strophomenida - Leptostrophiidae
Eostropheodonta sp.
Eostropheodonta sp. Bancroft 1949
 Strophomenida - Hesperomenidae
? Anoptambonites sp.
? Anoptambonites sp. Williams 1962
originally entered as "Anoptambonites? sp."
 Strophomenida - Leptestiidae
Leptestiina sp., Leangella sp.
Leptestiina sp. Opik 1933
Leangella sp. Opik 1933
 Strophomenida - Christianiidae
Christiania sp.
Christiania sp. Hall and Clarke 1892
Lingulata
 Lingulida - Discinidae
Orbiculoidea sp.
Orbiculoidea sp. d'Orbigny 1847