Solitary rugose coral-Syringopora Comm., Steinsfjorden Fm., Holmestrand Dist. (Silurian of Norway)

Where: Norway (68.8° N, 15.0° E: paleocoordinates 10.5° S, 9.5° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Steinsfjorden Formation, Homerian (430.5 - 427.4 Ma)

• Type locality is middle part of formation. Others are middle and upper part of fm.

• formation-level stratigraphic resolution

Environment/lithology: marine; carbonate and shelly/skeletal, calcareous mudstone

• "...high number of taxa and abundance of corals indicate stable, optimal environment...strong niche differentiation...[Some elements] adapted to soft bottom...subtidal, low energy, soft bottom (outermost BA 2-3 in well-circulated waters."
• "community developed in carbonates...facies M and N (Stolum, 1983)...fine-grained, unsorted mudstones...crinoid ossicles contribute to sand fraction..."

Collection methods: Table 22.17 gives abundance data and forms basis for this list.

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 14317: authorized by Michael Foote, entered by Michael Foote on 30.05.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Some taxa are not listed to the genus level. Over 40 taxa are said to be present, but list given is not this long.
unclassified
  -
Ostracoda
 Leperditicopida -
Herrmannina sp. Kegel 1933 ostracod
Strophomenata
 Strophomenida - Leptostrophiidae
Rhynchonellata
 Spiriferida - Delthyrididae
Delthyris elevata Dalman 1828
 Atrypida - Atrypidae
Atrypa reticularis Linnaeus 1758
species name in quotes
 Rhynchonellida - Trigonirhynchiidae
 Orthida - Dalmanellidae
Resserella canalis Sowerby 1839
Bivalvia
  -
"Pelecypoda indet." = Bivalvia
"Pelecypoda indet." = Bivalvia Linnaeus 1758 clam
bivalve sp. A
 Solenida - Orthonotidae
cf. Orthonota sp. Conrad 1841 clam
Gastropoda
  -
Gastropoda indet. Cuvier 1797 snail
gastropod sp. A
 Euomphalina - Euomphalidae
"Oriostoma discors" = Poleumita discors
"Oriostoma discors" = Poleumita discors Sowerby 1814 snail
 Euomphalina - Platyceratidae
"Platyceras cf. cornutum" = Platyostoma cornutum
"Platyceras cf. cornutum" = Platyostoma cornutum Hisinger 1837 snail
 Euomphalina - Oriostomatidae
"Oriostoma cf. globosa" = Oriostoma globosum
"Oriostoma cf. globosa" = Oriostoma globosum von Schlotheim 1820 snail
 Bellerophontida - Bellerophontidae
Bellerophontidae indet. M'Coy 1851 snail
 Murchisoniina - Loxonematidae
Loxonema sinuosum de Sowerby and Murchison 1839 snail
[entered as Loxonema simuosum]
 Murchisoniina - Subulitidae
Subulites attenuatus Lindström 1884 snail
[entered as Subulites attentuatus]
Cephalopoda
 Actinocerida - Armenoceratidae
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
bryozoan sp. C
Anthozoa
 Auloporida - Syringoporidae
Syringopora norvegica tabulate coral
Syringopora parva Lukin 2006 tabulate coral
 Favositida - Favositidae
Favosites hisingeri Milne-Edwards and Haime 1851 tabulate coral
 Favositida - Theciidae
Thecia swinderenana tabulate coral
 Heliolitida - Halysitidae
Catenipora sp. Lamarck 1816 tabulate coral
 Rugosa -
Rugosa indet. horn coral
solitary