Dalby Formation, Bed: 4.65-7.40 (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. Core sample with some vertical averaging; equivalent to Estonian age C3/D1 according to Sheehan, 1979: 64

• formation-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; lithified, gray, calcareous lime mudstone

• Dark gray (calcareous?) mudstone

Size classes: macrofossils, mesofossils, microfossils

Primary reference: V. Jaanusson. 1965. The Viruan (Middle Ordovician) of Kinnekulle and northern Billingen, Vastergotland. Bulletin of Geological Institutions of the University of Uppsala 43(1):1-73 [A. Miller/P. Novack-Gottshall/A. Clement]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 77083: authorized by Phil Novack-Gottshall, entered by Paul Hearn on 19.12.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Ostracoda
 Palaeocopida - Circulinidae
 Palaeocopida - Aechminidae
"Parapyxion subovatum" = Vogdesella
"Parapyxion subovatum" = Vogdesella ostracod
 Palaeocopida - Ctenonotellidae
Steusloffia sp. Ulrich and Bassler 1908 ostracod
 Palaeocopida - Eurychilinidae
 Palaeocopida - Conchoprimitiidae
Trilobita
 Asaphida - Asaphidae
Asaphus (Neoasaphus) cf. ludibundus Törnquist 1884 trilobite
 Asaphida - Remopleurididae
Remopleurides sp. Portlock 1843 trilobite
 Trinucleida - Raphiophoridae
Lonchodomas sp. Angelin 1854 trilobite
Strophomenata
 Strophomenida - Leptellinidae
Palaeostrophomena sp. Holtedahl 1916
Hyolitha
 Hyolithida - Hyolithidae
Hyolithes sp. d'Eichwald 1840
Pterobranchia
 Graptoloidea - Climacograptidae
Climacograptus sp. Hall 1865 climacograptid
Pseudoclimacograptus sp. climacograptid
 Graptoloidea - Diplograptidae
"Glyptograptus cf. teretiusculus" = Hustedograptus teretiusculus, Diplograptus molestus
"Glyptograptus cf. teretiusculus" = Hustedograptus teretiusculus Hisinger 1840 graptolite