Dalby Formation. Bed 74.75-75.30 (Ordovician of Sweden)

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

• coordinate estimated from map

• small collection-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; poorly lithified, gray shale and lithified, calcareous mudstone

• Environment listed as Deep Mid-shelf
• Dark gray, marly shale and calcareous mudstone, in some parts with lighter gray spots and thin bentonite and biotite-rich layers

Size classes: macrofossils, mesofossils, microfossils

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 76905: authorized by Phil Novack-Gottshall, entered by Paul Hearn on 07.12.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Pterobranchia
 Graptoloidea - Climacograptidae
Climacograptus sp. Hall 1865 climacograptid
Strophomenata
 Strophomenida - Sowerbyellidae
"Sowerbyella cf. sericea" = Sowerbyella (Sowerbyella) sericea
"Sowerbyella cf. sericea" = Sowerbyella (Sowerbyella) sericea Sowerby 1839
"restricta" subspecies
Ostracoda
 Leperditellocopida - Primitiidae
Trilobita
 Asaphida - Remopleurididae
Robergia sp. Wiman 1905 trilobite