Bed 120a-b, Pyritic Marls, Golden Cap (Jurassic of the United Kingdom)

Where: Dorset, United Kingdom (50.7° N, 2.8° W: paleocoordinates 37.9° N, 6.5° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Belemnite Marls Formation, Ibex (189.6 - 183.0 Ma)

• Valdani subzone, actaeon horizon, ("Acanthopleuroceras actaeon zone" of Lang et al.).

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified, pyritic, black marl

• Black, somewhat friable marls, with small, flattened, smooth nodules of iron sulphide irregularly distributed (120a), and capped by a layer of larger, similar nodules (120 b).

Size class: macrofossils

Reposited in the BMNH

Primary reference: W. D. Lang, L. F. Spath, L. R. Cox and H. M. Muir-Wood. 1928. The Belemnite marls of Charmouth, a series in the Lias of the Dorset Coast. Quarterly Journal of the Geological Society 84:179-257 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 159158: authorized by Matthew Clapham, entered by Matthew Clapham on 28.07.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Bivalvia
 Pectinida - Pectinoidae
Chlamys milvus
Chlamys milvus Cox 1928 scallop
 Pectinida - Anomiidae
? Placunopsis sp.
? Placunopsis sp. Morris and Lycett 1853 scallop
Cephalopoda
 Ammonitida - Polymorphitidae
"Acanthopleuroceras aff. actaeon" = Tropidoceras actaeon, Dayiceras polymorphoides
"Acanthopleuroceras aff. actaeon" = Tropidoceras actaeon d'Orbigny 1844 ammonite
 Ammonitida - Lytoceratidae
Lytoceras cf. fimbriatum
Lytoceras cf. fimbriatum Sowerby 1817 ammonite
 Belemnitida - Passaloteuthididae
Passaloteuthis dayi
Passaloteuthis dayi Lang 1928 belemnite
Osteichthyes
 Ionoscopiformes - Furidae
Heterolepidotus latus
Heterolepidotus latus Egerton 1872 ray-finned fish