Dimmer Camp, pit 2, bed 5 (Jurassic of the United Kingdom)

Where: Somerset, United Kingdom (51.1° N, 2.5° W: paleocoordinates 37.8° N, 4.0° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Oxynotum (196.5 - 189.6 Ma)

• Oxynotum subzone. 5.7 m thick.

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; lithified, gray, blue claystone

• The lack of ripple lamination and scour structures also indicates that the sediment accumulated at depths below storm wave base.

Size class: macrofossils

Preservation: original calcite, replaced with pyrite

Reposited in the BMNH

Primary reference: N. T. J. Hollingworth, D. J. Ward, M. J. Simms and P. Clothier. 1990. A temporary exposure of Lower Lias (Late Sinemurian) at Dimmer Camp, Castle Cary, Somerset, south-west England. Mesozoic Research 2:163-180 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 159471: authorized by Matthew Clapham, entered by Matthew Clapham on 02.08.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Crustacea
  -
Crustacea indet. BrĂ¼nnich 1772
"indet. crustacean remains"
Bivalvia
 Nuculanida - Polidevciidae
Ryderia doris d'Orbigny 1849 clam
 Lucinida -
Lucinoidea indet. Fleming 1828 clam
Lucinoid indet. -? Mactromya
 Ostreida - Gryphaeidae
Gryphaea sp. Lamarck 1801 oyster
 Ostreiformii -
Pectinida indet. Gray 1854 scallop
 Pectinida - Limidae
Plagiostoma sp. Sowerby 1814 file clam
 Pectinida - Oxytomidae
Oxytoma inequivalvis Sowerby 1819 scallop
Cephalopoda
 Ammonitida - Eoderoceratidae
Bifericeras bifer Quenstedt 1845 ammonite
Bifericeras nudicosta Quenstedt 1845 ammonite
 Ammonitida - Echioceratidae
Palaeoechioceras spirale Trueman and Williams 1927 ammonite
 Ammonitida - Oxynoticeratidae
Gleviceras glevense Buckman 1918 ammonite
Oxynoticeras oxynotum Quenstedt 1843 ammonite
Cheltonia acciptris Buckman 1923 ammonite
 Belemnoidea -
Belemnitida indet. Zittel 1895 belemnite
Gastropoda
  -
Gastropoda indet. Cuvier 1795 snail
Turbinid and spired gastropods
Rhynchonellata
 Terebratulida - Zeilleriidae
Zeilleria perforata Piette 1856
Cincta numismalis Lamarck 1819
 Rhynchonellida -
Gnathostomata
  -
Actinopterygii indet. ray-finned fish
"indet. fish remains"