Dalmanella - Gelidorthis assem. F6 Lower Flags and Grits, Ffairfach: Late/Upper Llanvirn, United Kingdom

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Conularida indet.
5 individuals
Hexactinellida - Lyssacinosa - Stiodermatidae
Hyalostelia fasicula
7 individuals
Strophomenata - Orthotetida - Triplesiidae
Triplesia edgelliana (Davidson 1869)
2 individuals
Strophomenata - Strophomenida - Rafinesquinidae
Macrocoelia llandeiloensis (Davidson 1871)
13 individuals
Strophomenata - Billingsellida - Gonambonitidae
Kullervo sp. Opik 1932
1 individual
Rhynchonellata - Orthida - Glyptorthidae
Glyptorthis viriosa Williams 1974
41 individuals
Rhynchonellata - Orthida - Giraldiellidae
Gelidorthis cennenensis
79 individuals
Rhynchonellata - Orthida - Heterorthidae
Tissintia immatura (Williams 1949)
2 individuals
Rhynchonellata - Orthida - Dalmanellidae
Dalmanella parva Williams 1949
140 individuals
Inarticulata - Inarticulata
Inarticulata indet. Huxley 1869
3 individuals
invalid subgroup of Brachiopoda
unclassified
Bryozoa indet. Ehrenberg 1831
25 individuals
Stenolaemata - Cryptostomata
Cryptostomata indet. Vine 1884
8 individuals
Stenolaemata - Trepostomata
Trepostomata indet. Ulrich 1882
15 individuals
Ostracoda - Hollinocopida - Tetradellidae
Tallinnella sp. Opik 1937
6 individuals
[entered as Talinella sp.]
Trilobita
Trilobita indet. Walch 1771
10 individuals
Trilobita - Lichida - Lichidae
Metopolichas sp. (Gürich 1901)
7 individuals
original and current combination Lichas (Metopolichas)
Trilobita - Trinucleida - Trinucleidae
Marrolithus sp. Bancroft 1929
7 individuals
Trilobita - Asaphida - Asaphidae
Basilicus tyrannus (Murchison 1839)
46 individuals
Trilobita - Phacopida - Encrinuridae
Atractopyge sp. Hawle and Corda 1847
1 individual
Trilobita - Phacopida - Calymenidae
Flexicalymene cambriensis (Salter 1865)
4 individuals
recombined as Flexicalymene cambrensis
Crinoidea
Crinoidea indet. Miller 1821
see common names

Geography
Country:United Kingdom State/province:Wales
Coordinates: 52.0° North, 4.0° West (view map)
Paleocoordinates:58.0° South, 19.7° West
Geographic resolution:small collection
Time
Period:Ordovician Epoch:Middle Ordovician
Stage:Darriwilian 10 m.y. bin:Ordovician 3
*Period:Middle Ordovician *Epoch:Early/Lower Llandeilo
Key time interval:Late/Upper Llanvirn Graptolite zone: Didymograptus murchisoni
Age range of interval:463.50000 - 460.90000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Geological group:Ffairfach Formation:Ffairfach Flags and Grits
Local section:Ffairfach Local bed:F6
Stratigraphic resolution:bed
Stratigraphy comments: Ffairfach Section Sample F6
JA: originally entered as Lower Llandeilo and resolved to the formation level, but Upper Llanvirn according to the authors and certainly resolved to the bed level
Lithology and environment
Primary lithology: lithified calcareous siltstone
Environment:transition zone/lower shoreface
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:bulk,sieve
Reason for describing collection:paleoecologic analysis
Taxonomic list comments:Brachiopod faunal associations
Metadata
Database number:3318
Authorizer:A. Miller Enterer:P. Novack-Gottshall, A. Miller
Modifier:M. Uhen Research group:marine invertebrate
Created:1999-07-29 13:28:27 Last modified:2018-11-26 16:40:00
Access level:the public Released:1999-07-29 13:28:27
Creative Commons license:CC BY
Reference information

Primary reference:

162. A. Williams, M. G. Lockley, and J. M. Hurst. 1981. Benthic palaeocommunities represented in the Ffairfach Group and coeval Ordovician successions of Wales. Palaeontology 24(4):661-694 [A. Miller/P. Novack-Gottshall/J. Alroy]