Spirodden, 30 meters above base of Myren Member (Silurian of Norway)

Where: Asker, Norway (59.8° N, 10.5° E: paleocoordinates 26.8° S, 8.9° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Myren Member (Solvik Formation), Rhuddanian (443.4 - 440.8 Ma)

• member-level stratigraphic resolution

Environment/lithology: marine; mudstone and calcareous siltstone

• "Occurrenced of ball and pillow and otherwise contorted bedding in very thin siltstone beds indicates that the bottom might sometimes have been soupy...transport considered to be of little importance...Silt interbeds with erosive bases are very rare, and a position below wave base is indicated. the comm. occurs in an upwardly shallowing sequence...[it] is assigned to a BA 5 position, extending somewhat into BA 4."
• "This comm. occurs in strongly mudstone dominated facies with minor calcareous siltstones or silty limestones."

Size classes: macrofossils, mesofossils

Primary reference: B. G. Baarli and D. A. T. Harper. 1986. Relict Ordovician brachiopod faunas in the Lower Silurian of Asker, Oslo Region, Norway. Norsk Geologisk Tidsskrift 66:87-98 [B. Kröger/B. Kröger]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 191031: authorized by Björn Kröger, entered by Björn Kröger on 04.01.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Strophomenata
 Strophomenida - Sowerbyellidae
"Eoplectodonta duplicata" = Eoplectodonta (Eoplectodonta) duplicata
"Eoplectodonta duplicata" = Eoplectodonta (Eoplectodonta) duplicata de Sowerby and Murchison 1839
 Strophomenida - Leptestiidae
Leangella scissa Davidson 1871
 Strophomenida - Rafinesquinidae
"Leptaena haverfordensis" = Leptaena (Leptaena) haverfordensis
"Leptaena haverfordensis" = Leptaena (Leptaena) haverfordensis Bancroft 1949
Rhynchonellata
 Pentamerida - Clorindidae
"Clorinda undata" = Clorilamnulella undata
"Clorinda undata" = Clorilamnulella undata de Sowerby and Murchison 1839
 Atrypida - Lissatrypidae
 Atrypida - Septatrypidae
 Orthida - Dicoelosiidae
 Orthida - Dalmanellidae
"Isorthis prima" = Levenea llandoveriana
"Isorthis prima" = Levenea llandoveriana Williams 1951
 Orthida - Hesperorthidae
Dolerorthis sp. Schuchert and Cooper 1931