Grammatodon 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)

• Grammatodon 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

• Grammatodon shell beds occur in the Grammatodon-rich bituminous shales

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 37954: 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
13 different species
Bivalvia
 Arcida - Parallelodontidae
 Pectinida - Entoliidae
"Entolium corneolum" = Entolium (Entolium) corneolum
"Entolium corneolum" = Entolium (Entolium) corneolum Young and Bird 1828 scallop
 Pectinida - Oxytomidae
 Ostreida - Ostreidae
Ostreidae indet. Rafinesque 1815 oyster
Flat oyster
 Ostreida - Posidoniidae
"Bositra buchii" = Bositra buchi
"Bositra buchii" = Bositra buchi Roemer 1836 oyster
 Pholadida - Corbulidae
 Cardiida -
 Thraciida - Thraciidae
Thracia depressa Sowerby 1823 clam
 Nuculida - Nuculidae
Palaeonucula sp. Quenstedt 1930 nut clam
 Protobranchia - Nuculanidae
Mesosaccella morrisi pointed nut clam
Gastropoda
 Sorbeoconcha - Procerithiidae