Gryphaea shell bed biofacies, Lower Oxford Clay, Central England (Jurassic of the United Kingdom)

Where: England, United Kingdom (52.0° N, 1.0° W: paleocoordinates 42.1° N, 9.1° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Lower Member (Oxford Clay Formation), Early/Lower Callovian (164.7 - 161.2 Ma)

• Gryphaea shell beds are restricted to the transition beds between the Kellaways Rock and the Oxford Clay

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; lithified shale

• shell bed

Size class: macrofossils

Preservation: recrystallized, original aragonite, replaced with calcite

Primary reference: K. L. Duff. 1975. Palaeoecology of a Bituminous Shale - The Lower Oxford Clay of Central England. Palaeontology 18(3):443-482 [M. Aberhan/S. Nurnberg/S. Nurnberg]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 37955: authorized by Martin Aberhan, entered by Sabine N├╝rnberg on 28.03.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Mollusca indet. Linnaeus 1758
7 different species
Bivalvia
 Arcida - Parallelodontidae
 Pectinida - Oxytomidae
 Ostreida - Gryphaeidae
Gryphaea sp. n. sp.
Gryphaea sp. n. sp. Lamarck 1801 oyster
 Pholadida - Corbulidae
 Thraciida - Thraciidae
Thracia depressa Sowerby 1823 clam
 Lucinida - Lucinidae
 Nuculida - Nuculidae
Palaeonucula sp. Quenstedt 1930 nut clam
Gastropoda
 Sorbeoconcha - Procerithiidae