Amtjärn Quarry, Jonstorp Fm. (Ordovician of Sweden)

Also known as Reef 1853

Where: Dalarne, Sweden (60.9° N, 15.1° E: paleocoordinates 28.4° S, 6.8° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Jonstorp Formation, Katian (453.0 - 445.2 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marginal marine; lithified, argillaceous, calcareous mudstone

Size classes: macrofossils, mesofossils

Primary reference: B. Kröger. 2013. The cephalopods of Boda Limestone, Late Ordovocian, of Dalarna, Sweden. European Journal of Taxonomy 41:1-110 [B. Kröger/B. Kröger]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 157537: authorized by Björn Kröger, entered by Björn Kröger on 23.06.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

 Nautiloidea - Cyrtogomphoceratidae
Strandoceras sphinx Schmidt 1858 nautiloid
 Tarphycerida - Trocholitidae
Discoceras roemeri Strand 1934