Dicoelosia osloensis-Rhinopora malmoensis Comm., Leangen Mbr. of Solvik Formatio (Silurian of Norway)

Where: Norway (59.9° N, 10.8° E: paleocoordinates 25.7° S, 8.8° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Leangen Member (Solvik Formation), Aeronian (440.8 - 438.5 Ma)

• Basal Leangen member, Solvik Formation, earliest Aeronian.

• member-level stratigraphic resolution

Environment/lithology: offshore; calcareous shale and sandstone

• "...signs of transport [valve ratios] within habitat...clearl shallowing trend throughout section... offshore environment and deposition immediately below storm wave base...A BA 5 assignment is likely..."
• "This comm. occurs in thickly bedded shales. The lime content is very low, and there are some very thin fine-grained sandstone interlayers."

Collection methods: Table 22.5 gives absolute and relative abundances. This collection reflects the same material as collection number 13845, but species names and other taxa have been added.

Primary reference: B. G. Baarli, H. B. Keilen, and M. E. Johnson. 1999. Silurian communities of the Oslo Region, Norway. In A. J. Boucot and J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 327-349 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 14279: authorized by Michael Foote, entered by Michael Foote on 29.05.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Some taxa not listed to genus level.
Anthozoa
 Rugosa -
Rugosa indet. horn coral
 Favositida - Favositidae
Favositidae indet. Dana 1846 tabulate coral
Scyphozoa
 Conulariida -
Conulariida indet. Miller and Gurley 1896 jellyfish
Deuteropoda
  -
Ostracoda indet. Latreille 1802 ostracod
Trilobita
  -
Trilobita indet. Walch 1771 trilobite
Strophomenata
 Strophomenida - Rafinesquinidae
"Leptaena haverfordensis" = Leptaena (Leptaena) haverfordensis
"Leptaena haverfordensis" = Leptaena (Leptaena) haverfordensis Bancroft 1949
 Strophomenida - Furcitellidae
 Strophomenida - Leptestiidae
Leangella scissa Davidson 1871
 Strophomenida - Aegiromenidae
"Aegirea norvegica" = Aegiria norvegica
"Aegirea norvegica" = Aegiria norvegica Opik 1933
 Strophomenida - Sowerbyellidae
"Eoplectodonta duplicata" = Eoplectodonta (Eoplectodonta) duplicata
"Eoplectodonta duplicata" = Eoplectodonta (Eoplectodonta) duplicata de Sowerby and Murchison 1839
 Orthotetida - Chilidiopsidae
Fardenia oblectator Baarli 1995
Rhynchonellata
 Protorthida - Skenidiidae
 Pentamerida - Stricklandiidae
Stricklandia lens Sowerby 1839
 Atrypida - Cyclospiridae
Cyclospira sp. Hall and Clarke 1893
 Atrypida - Lissatrypidae
 Atrypida - Atrypidae
 Atrypida -
Protatrypa malmoeyensis Boucot et al. 1964
 Orthida - Rhipidomellidae
 Orthida - Dicoelosiidae
 Orthida - Dalmanellidae
"Isorthis prima" = Levenea llandoveriana
"Isorthis prima" = Levenea llandoveriana Williams 1951
 Orthida - Draboviidae
 Orthida - Hesperorthidae
Craniata
 Craniopsida - Craniopsidae
Paracraniops sp. Williams 1963
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
stick bryozoans
Stenolaemata
 Cryptostomata - Rhinoporidae
Lophophorata
 Tentaculitida - Tentaculitidae
Tentaculites sp. von Schlotheim 1820
genus name in quotes
Bivalvia
  -
"Pelecypoda indet." = Bivalvia
"Pelecypoda indet." = Bivalvia Linnaeus 1758 clam
Gastropoda
  -
Gastropoda indet. Cuvier 1795 snail
Crinoidea
  -
Crinoidea indet. Miller 1821 Sea lily
Chlorophyceae
 Dasycladales - Dasycladaceae
Cyclocrinites sp. Stolley 1898
genus name in quotes