Fjacka Shale, Pleurograptus linearis zone (Ordovician of Sweden)

Also known as Black Tretaspis Shale

Where: Saljan, Sweden (60.0° N, 16.0° E: paleocoordinates 31.6° S, 6.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Fjacka Shale Formation, Caradoc (460.9 - 449.5 Ma)

• Listed as Upper Caradoc. Pleurograptus linearis zone; F1b age according to Sheehan, 1979: 64

• formation-level stratigraphic resolution

Environment/lithology: offshore shelf; poorly lithified, black, brown shale

• Originally called the Black Tretaspis Shale; update in Sheehan, 1979: 64; Double check environment
• Dark brown to black, thin-bedded shale

Size classes: macrofossils, mesofossils

Primary reference: V. Jaanusson. 1958. Black Tretaspis Shale. Lexique Stratigraphique International, Centre National de la Recherche Scientifique, Stockholm [P. Novack-Gottshall/P. Hearn/P. Hearn]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 77102: authorized by Phil Novack-Gottshall, entered by Paul Hearn on 20.12.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Odontopleurida - Odontopleuridae
"Acidaspis dalecarlica" = Primaspis evoluta
"Acidaspis dalecarlica" = Primaspis evoluta Törnquist 1884 trilobite
 Phacopida - Calymenidae
Flexicalymene trinucleina Tullberg 1882 trilobite
 Olenida - Olenidae
 Proetida - Proetidae
"Proetus papyraceus" = Decoroproetus papyraceus
"Proetus papyraceus" = Decoroproetus papyraceus Törnquist 1884 trilobite
 Asaphida - Remopleurididae
 Asaphida - Raphiophoridae
 Asaphida - Trinucleidae
Tretaspis seticornis Hisinger 1840 trilobite
Strophomenata
 Strophomenida - Aegiromenidae
Sericoidea sp. Lindström 1953
 Strophomenida - Strophomenidae
"Actinomena arachnoidea" = Strophomena (Actinomena) arachnoidea
"Actinomena arachnoidea" = Strophomena (Actinomena) arachnoidea Lindström 1880
Rhynchonellata
 Orthida - Draboviidae
Drabovia sp. Havlicek 1950
 Orthida - Dalmanellidae
 Orthida - Glyptorthidae
Glyptorthis sp. Foerste 1914
Lingulata
 Acrotretida - Acrotretidae
Hisingerella nitens Hisinger 1837
Graptolithina
 Diplograptoidea - Diplograptidae
Diplograptus pristis Hall 1847 diplograptoid
 Bireclinata -
Climacograptus minimus climacograptid
Climacograptus styloideus Lapworth 1873 climacograptid