Llandeilo Sandstone-siltstone facies, Llandeilo, Wales, UK (Ordovician of the United Kingdom)

Where: Wales, United Kingdom (52.0° N, 4.0° W: paleocoordinates 58.8° S, 19.6° W)

• local area-level geographic resolution

When: Early/Lower Llandeilo (466.0 - 460.9 Ma)

• Facies assemblage of formations in the Type Llandeilo

Environment/lithology: transition zone or lower shoreface; lithified, burrowed sandstone and siltstone

• Cross-laminated sandstone and siltstone, small-scale erosional features, shell lags, shale chip conglomerate, small bioturbation

Size class: macrofossils

Primary reference: C. J. Wilcox and M. G. Lockley. 1981. A reassessment of facies and faunas the type Llandeilo (Ordovician), Wales. Palaeogeography, Palaeoclimatology, Palaeoecology 34(3-4):285-314 [A. Miller/P. Novack-Gottshall]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 3366: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 31.07.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

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Rhynchonellata
 Orthida - Dalmanellidae
Dalmanella sp.
Dalmanella sp. Hall and Clarke 1892
 Orthida - Heterorthidae
Tissintia sp.
 Orthida - Harknessellidae
Horderleyella sp.
Horderleyella sp. Bancroft 1928
 Orthida - Platystrophiidae
Mcewanella sp.
Mcewanella sp. Foerste 1920
 Orthida - Plectorthidae
Corineorthis sp.
 Orthida - Glyptorthidae
Glyptorthis sp.
Glyptorthis sp. Foerste 1914
 Pentamerida - Parastrophinidae
Parastrophinella sp.
Parastrophinella sp. Schuchert and Cooper 1931
Strophomenata
 Strophomenida - Sowerbyellidae
Sowerbyella sp.
Sowerbyella sp. Jones 1928
 Orthotetida - Triplesiidae
Oxoplecia sp.
Oxoplecia sp. Wilson 1913
Lingulata
 Lingulida - Trematidae
Schizocrania sp.
Schizocrania sp. Hall and Whitfield 1875
 Lingulida - Discinidae
Schizotreta sp.
Schizotreta sp. Kutorga 1848
 Lingulida - Pseudolingulidae
Pseudolingula sp.
Pseudolingula sp. Mickwitz 1909
 Lingulida - Obolidae
Palaeoglossa sp.
Palaeoglossa sp. Cockerell 1911
Bivalvia
 Cyrtodontida - Cyrtodontidae
Cyrtodonta sp.
Cyrtodonta sp. Billings 1858 clam
 Nuculida - Praenuculidae
Similodonta sp.
Similodonta sp. Soot-Ryen 1964 clam
Gastropoda
 Bellerophontida - Sinuitidae
Sinuites sp.
Sinuites sp. Koken 1896 snail
Ostracoda
 Hollinocopida - Tetradellidae
Tallinnella sp.
Tallinnella sp. Opik 1937 ostracod
 Leperditellocopida - Primitiidae
Primitia sp.
Primitia sp. Jones and Holl 1923 ostracod
Trilobita
 Trinucleida - Trinucleidae
Lloydolithus sp., Marrolithus sp.
Lloydolithus sp. Bancroft 1933 trilobite
Marrolithus sp. Bancroft 1929 trilobite
 Asaphida - Asaphidae
"Ogygiocarella sp." = Ogygiocaris, Basilicus sp.
"Ogygiocarella sp." = Ogygiocaris Angelin 1854 trilobite
Basilicus sp. Salter 1849 trilobite
 Phacopida - Calymenidae
Flexicalymene sp.
Flexicalymene sp. Shirley 1936 trilobite