Bed 120d, Crumbly Bed, 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

• local area-level geographic resolution

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

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

• bed-level stratigraphic resolution

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

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 159147: authorized by Matthew Clapham, entered by Matthew Clapham on 28.07.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Rhynchonellata
 Rhynchonellida - Rhynchonellidae
"Rhynchonella" sp., "Tropiorhynchia thalia" = Piarorhynchia thalia
"Rhynchonella" sp. Fischer 1809
"Tropiorhynchia thalia" = Piarorhynchia thalia d'Orbigny 1850
Bivalvia
 Arcida - Parallelodontidae
Parallelodon trapezium n. sp. Cox 1928 clam
 Myalinida - Inoceramidae
"Inoceramus ventricosus" = Parainoceramya ventricosa
"Inoceramus ventricosus" = Parainoceramya ventricosa Sowerby 1823 clam
 Pectinida - Anomiidae
Placunopsis sp. Morris and Lycett 1853 scallop
Gastropoda
 Ptychomphaloidea - Ptychomphalidae
Ptychomphalus expansus Sowerby 1821 snail
 Pleurotomariida - Pleurotomariidae
"Pleurotomaria similis" = Pleurotomaria anglica
"Pleurotomaria similis" = Pleurotomaria anglica Sowerby 1818 snail
 Vetigastropoda - Discohelicidae
Discohelix orbis Reuss 1852 snail
 Seguenzioidea - Eucyclidae
Amberleya auricipitis n. sp. Cox 1928 snail
Cephalopoda
 Ammonitida - Polymorphitidae
"Acanthopleuroceras calliplocoides" = Tropidoceras calliplocoides, "Acanthopleuroceras aff. calliplocoides" = Tropidoceras calliplocoides, Acanthopleuroceras sp., Acanthopleuroceras stahli
"Acanthopleuroceras calliplocoides" = Tropidoceras calliplocoides Spath 1923 ammonite
"Acanthopleuroceras aff. calliplocoides" = Tropidoceras calliplocoides Spath 1923 ammonite
Acanthopleuroceras sp. Hyatt 1900 ammonite
Acanthopleuroceras stahli Oppel 1856 ammonite
 Ammonitida - Liparoceratidae
 Ammonitida - Lytoceratidae
Lytoceras fimbriatum Sowerby 1817 ammonite