Dalby Formation. Bed 83.07-84.60 (Ordovician of Sweden)

Where: Vastergotland, Sweden (58.0° N, 12.0° E: paleocoordinates 33.7° S, 8.9° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Upper Member (Dalby Formation), Caradoc (458.4 - 449.5 Ma)

• Listed as Middle Caradoc

• group of beds-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; lithified, gray, calcareous mudstone and lithified, bentonitic, argillaceous limestone

• Environment listed as Deep Mid-shelf
• Dark gray, calcareous mudstone with irregular beds (lenses?) of gray, compact, argillaceous limestone and some bentonites and biotite-thick beds

Size classes: macrofossils, mesofossils, microfossils

Preservation: trace

Collection methods: 7 cm diameter core sample, but with some vertical averaging; equivalent to Estonian age C3/D1 according to Sheehan, 1979: 64

Primary reference: P. Thorslund. 1948. The Chasmops Series of the Kullatorp Core. Bulletin of the Geological Institutions of the University of Uppsala, New Series 32:343-373 [P. Novack-Gottshall/P. Hearn]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 76912: authorized by Phil Novack-Gottshall, entered by Paul Hearn on 07.12.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Ostracoda
 Palaeocopida - Primitiidae
 Palaeocopida - Euprimitiidae
 Palaeocopida - Tetradellidae
Sigmobolbina sp. Henningsmoen 1953 ostracod
 Palaeocopida - Conchoprimitiidae
Trilobita
 Asaphida - Asaphidae
Asaphus (Neoasaphus) cf. ludibundus Törnquist 1884 trilobite
 Asaphida - Nileidae
 Trinucleida - Raphiophoridae
Lonchodomas rostratus Sars 1835 trilobite
Rhynchonellata
 Orthida - Dalmanellidae
Onniella sp. Bancroft 1928
Pterobranchia
 Graptoloidea - Climacograptidae
Climacograptus sp. Hall 1865 climacograptid