Winter Hill, Gastrioceras cumbriense Marine Band, shale Unit 4 (Carboniferous to of the United Kingdom)

Also known as Winter Hill, Gastrioceras cumbriense Marine Band, shale Unit 4, the retreat shales

Where: England, United Kingdom (53.6° N, 2.4° W: paleocoordinates 1.2° S, 6.2° E)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Namurian Series Formation, Pendleian to Pendleian (326.4 - 314.6 Ma)

• The Gastrioceras cumbriense Marine Band generally does not exceed 60cm in thickness. The band is split into five units, the lower barren shales (Unit 1), the advance shales (Unit 2), the acme shales (Unit 3), the retreat shales (Unit 4), and the upper barren shales (Unit 5).

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, gray, silty shale and lithified, black shale

• the regression was temporarily reversed at this western locality.
• Unit 4: The regression is marked by a return to conditions similar to those of the advance. At Winter Hill a retreat faunal profile is well developed in 1.85m of dark grey, silty shale similar in lithology to that of other localities. this is overlain by a paper shale with a fauna dominated by Gastrioceras sp. and Dunbarella elegans. It thus appears that the regression was temporarily reversed at this western locality.

Size class: macrofossils

Primary reference: P. B. Wignall. 1987. A biofacies analysis of the Gastroceras cumbriense marine band (Namurian) of the central Pennines. Proceedings of the Yorkshire Geological Society 46(2):111-121 [J. Alroy/C. Simpson/C. Simpson]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 41208: authorized by John Alroy, entered by Carl Simpson on 08.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Nautilodea indet.
Narrow angle orthocone
Bivalvia indet. Linnaeus 1758 clam
 Pectinida - Aviculopectinidae
Aviculopecten sp. M'Coy 1851 scallop
 Pectinida - Pterinopectinidae
 Ostreida - Posidoniidae
Posidonia sp. Bronn 1828 oyster
 Ostreida - Pterineidae
 Cardiidia - Sanguinolitidae
Sanguinolites sp. M'Coy 1844 clam
Gastropoda indet. Cuvier 1797 snail
 Murchisoniina - Gosseletinidae
Angyomphalus sp. Cossmann 1915 snail
 Goniatitida - Dimorphoceratidae
Anthracoceratites sp. Ramsbottom 1970 ammonite
 Goniatitida - Gastrioceratidae
 Goniatitida - Ramositidae
Chondrichthyes indet. Huxley 1880 cartilaginous fish
Osteichthyes indet. bony fish
Palaeoniscid scales
 Lingulida - Lingulidae
  - Calamitaceae
cf. Calamites sp. Brongniart 1828