Upper Alum Shale, primarily lower 40 cm (Cambrian of Denmark)

Where: Bornholm, Denmark (55.0° N, 15.0° E: paleocoordinates 43.2° S, 28.3° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Paradoxides forchhammeri trilobite zone, Upper Shale Member (Alum Formation), Menevian (513.0 - 501.0 Ma)

• Listed as Latest Menevian. Lejopyge laevigata trilobite subzone; Paradoxides forchhammeri zone

• bed-level stratigraphic resolution

Environment/lithology: poorly lithified, black shale and lithified, concretionary limestone

• 40 samples, each 10 cm long and averaging 1.5 kg, collected along 4 m section profile
• Fissile, paper-thin but occasionally thick-bedded black shale with occasional limestone nodules

Size classes: macrofossils, mesofossils

Preservation: concretion, replaced with pyrite

Primary reference: V. Berg-Madsen. 1985. A review of the Andrarum Limestone and the Upper Alum Shale (Middle Cambrian) of Bornholm, Denmark. Bulletin of the Geological Society of Denmark 34:133-143 [P. Novack-Gottshall/P. Hearn]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 75944: authorized by Phil Novack-Gottshall, entered by Paul Hearn on 06.11.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

• Lejopyge laevigata trilobite subzone; Paradoxides forchhammeri zone; Fauna primarily from lowermost 10 cm; although several localities, treating as pooled samples due to narrow stratigraphic interval
 Agnostida - Peronopsidae
 Ptychopariida - Acrocephalitidae
Ostracoda indet. Latreille 1802 ostracod
 Protoconodontida -
Lingulata indet. Gorjansky and Popov 1985
 Acrotretida -
 Paterinida - Paterinidae
Micromitra sp. Meek 1873
 Paraconodontida -