Dark graptolitic shales of Lower Arenig age, Vastergotland, Sweden (Ordovician of Sweden)

Where: Sweden (58.0° N, 14.0° E: paleocoordinates 38.8° S, 11.8° W)

• local area-level geographic resolution

When: Arenig (478.6 - 466.0 Ma)

Environment/lithology: basinal (); lithified, gray, green shale and limestone

• Dark, green-grey shale with some limestone

Primary reference: T. E. Tjernvik. 1956. On the Early Ordovician of Sweden stratigraphy and fauna. Bulletin of the Geological Institutions of the University of Uppsala 36(6):109-284 [A. Miller/P. Novack-Gottshall/A. Clement]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 3197: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 27.07.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Pterobranchia
 Graptoloidea - Dichograptidae
Azygograptus sp., Didymograptus sp.
Azygograptus sp. Nicholson and Lapworth 1875 graptolite
Didymograptus sp. McCoy 1851 graptolite
 Graptoloidea - Phyllograptidae
Phyllograptus sp., Tetragraptus sp.
Phyllograptus sp. Hall 1858 graptolite
Tetragraptus sp. Salter 1863 graptolite
Trilobita
 Asaphida - Asaphidae
Megistaspis sp.
Megistaspis sp. Jaanusson 1956 trilobite
Malacostraca
 Archaeostraca - Ceratiocarididae
? Ceratiocaris sp.
? Ceratiocaris sp. M'Coy 1849
originally entered as "Ceratiocaris? sp."