St. Audrie's Bay, 7.2 m, Somerset, SW England: Rhaetian, United Kingdom

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Ophiuroidea - Ophiurida
Ophiolepis damesi (Wright 1874)
Benecke 1886 1 individual
nomen dubium belonging to Ophiurida
Gastropoda - Murchisoniina - Zygopleuridae
Zygopleura henrici
Bivalvia - Mytilida - Mytilidae
Modiolus sp. (Lamarck 1801)
Modiolus sodburiensis
Modiolus hillanus (Sowerby 1818)
recombined as Modiolus (Cyranus) hillanus
Bivalvia - Ostreida - Pteriidae
Rhaetavicula contorta (Portlock 1843)
Bivalvia - Ostreida - Bakevelliidae
Gervillella ornata
Bivalvia - Ostreida - Cassianellidae
Cassianella sp. Beyrich 1862
Bivalvia - Pectinida - Pectinidae
Chlamys valoniensis (Defrance 1825)
recombined as Praechlamys valoniensis
Bivalvia - Cardiida - Arcticidae
Isocyprina concentricum
Bivalvia - Cardiida - Cardiidae
Protocardia rhaetica (Merian 1853)
Bivalvia - Nuculanida - Nuculanidae
Dacryomya sp. (Agassiz 1840)
original and current combination Nuculana (Dacryomya)
see common names

Geography
Country:United Kingdom
Coordinates: 51.2° North, 3.3° West (view map)
Paleocoordinates:35.5° North, 0.5° East
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period: Triassic Epoch: Late Triassic
Stage: Rhaetian 10 m.y. bin: Triassic 4
Key time interval: Rhaetian
Age range of interval: 208.5 - 201.4 m.y. ago
Stratigraphy
Formation:Westbury
Local section:St. Audrie's Bay Local bed:7.2 m
Local order:bottom to top
Stratigraphic resolution:bed
Stratigraphy comments: distance above base of Wilton member, Blue Anchor Fm.; Rhaetipollis germanicus Zone
Lithology and environment
Primary lithology:gray lithified mudstone
Lithology description: dark grey siliciclastic mudstone
Environment:marine indet.
Geology comments: The sediments of the Westbury Fm. were deposited in a storm-dominated, shallow epeiric sea. The mudstones were deposited either in quiet offshore waters or in restricted lagoons subject to fluctuating salinity.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:bulk,mechanical,field collection
Reason for describing collection:paleoecologic analysis
Collection method comments: Housed in the Department of Earth Sciences, University of Bristol.
Metadata
Database number:78460
Authorizer:M. Aberhan, L. Villier Enterer:S. Nurnberg, L. Villier
Research group:marine invertebrate
Created:2008-02-07 03:23:15 Last modified:2008-02-07 05:23:15
Access level:the public Released:2008-02-07 03:23:15
Creative Commons license:CC BY
Reference information

Primary reference:

26390. L. Mander, R. J. Twitchett, and M. J. Benton. 2008. Palaeoecology of the Late Triassic extinction event in the SW UK. Journal of the Geological Society, London 165:319-332 [M. Aberhan/S. Nurnberg]

Secondary references:

30107 E. W. Benecke. 1886. Ueber eine Ophiure aus dem englischen Rhät. Neues Jahrbuch für Mineralogie, Geologie und Palaeontologie 2:195-200 [L. Villier/L. Villier]