Borghamn quarry, Alum Shale (Cambrian of Sweden)

Where: Östergötland, Sweden (58.4° N, 14.7° E: paleocoordinates 42.4° S, 25.8° W)

• coordinate estimated from map

When: Olenus Peltura trilobite zone, Alum Shale Formation, Cambrian (541.0 - 485.4 Ma)

• "Upper Cambrian", in Holmer & Popov (1990)

Environment/lithology: deep subtidal; shale and argillaceous lime mudstone

• alum shale & lenses of stinkstone

Size classes: macrofossils, mesofossils

Primary reference: L. E. Holmer and L. E. Popov. 1990. The acrotretacean brachiopod Ceratreta tanneri (Metzger) from the Upper Cambrian of Baltoscandia. Geologiska Föreningen i Stockholm Förhandlingar 112(3):249-263 [B. Kröger/B. Kröger]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 191156: authorized by Björn Kröger, entered by Björn Kröger on 12.01.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

 Ptychopariida -
 Hyolithida - Hyolithidae
Hyolithes sp. d'Eichwald 1840
 Orthida - Archaeorthidae
Archaeorthis sp. Schuchert and Cooper 1931
 Acrotretida - Ceratretidae
Ceratreta tanneri Metzger 1922