St. Audrie's Bay, 28.3 m, Somerset, SW England (Jurassic of the United Kingdom)

Where: England, United Kingdom (51.2° N, 3.3° W: paleocoordinates 37.3° N, 0.8° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Blue Lias Formation (Lias Group), Liasicus (201.3 - 196.5 Ma)

• distance above base of Wilton member, Blue Anchor Fm.; Heliosporites reissingeri Zone, Alsatites liasicus Zone, W. portlocki Subzone

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified, black shale

• Water depths of at least a few tens of meters, sufficient to prevent wave-mixing of bottom waters, have been inferred; oxygen depletion.
• laminated balck organic-rich shale

Size class: macrofossils

Collection methods: bulk, mechanical,

• Housed in the Department of Earth Sciences, University of Bristol.

Primary reference: 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]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 78504: authorized by Martin Aberhan, entered by Sabine Nürnberg on 07.02.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Psiloceratidae
Caloceras sp. ammonite
 Ammonitida - Schlotheimiidae
Bivalvia
 Nuculida - Nuculidae
Palaeonucula navis Piette 1868 nut clam
 Nuculanida - Nuculanidae
"Dacryomya heberti" = Dacromya
"Dacryomya heberti" = Dacromya pointed nut clam
 Nuculanida - Malletiidae
Palaeoneilo elliptica Goldfuss 1837 clam
 Mytilida - Mytilidae
Modiolus sp. Lamarck 1801 mussel
Modiolus minimus Sowerby 1818 mussel
 Pectinida - Limidae
Plagiostoma giganteum Sowerby 1814 file clam
 Ostreida - Gryphaeidae