Janius Community, Eke Marl, Lau Backar, Gotland (Silurian of Sweden)

Where: Sweden (57.3° N, 18.6° E: paleocoordinates 16.6° S, 2.2° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Eke Marl Formation, Ludfordian (425.6 - 423.0 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; marl

• Boucot infers normal current and oxygen, assigns to BA 3 on basis of geographic and stratigraphic relations.

Collection methods: Abundances stated in text.

Primary reference: A. J. Boucot. 1999. Some Wenlockian-Geddinian, chiefly brachiopod dominated communities of North America. In A. J. Boucot, J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 549-591 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 24867: authorized by Michael Foote, entered by Michael Foote on 21.08.2002, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Brachiopoda
  -
Brachiopoda indet. Cuvier 1805
unknown brachiopods
Strophomenata
 Strophomenida - Chonetidae
Chonetidae indet. Bronn 1862
 Strophomenida - Rafinesquinidae
Lepidoleptaena poulseni Kelly 1967
species name in quotes
 Strophomenida - Shaleriidae
Shaleria sp. Caster 1939
Rhynchonellata
 Atrypida - Atrypinidae
Atrypina sp. Hall and Clarke 1893
 Atrypida - Atrypidae
Atrypa reticularis Linnaeus 1758
species name in quotes
 Atrypida - Glassiidae
Glassia sp. Davidson 1881
 Orthida - Rhipidomellidae
Dalejina sp. Havlicek 1953
 Orthida - Dalmanellidae
Isorthis sp., "Isorthis canaliculata" = Levenea canaliculata
Isorthis sp. Kozlowski 1929
"Isorthis canaliculata" = Levenea canaliculata Lindström 1861
 Orthida - Hesperorthidae
Dolerorthis sp. Schuchert and Cooper 1931
Ptychopleurella sp. Schuchert and Cooper 1931
 Athyridida - Rhynchospirinidae
Rhynchospirina sp. Schuchert and LeVene 1929
 Spiriferida -
Spiriferida indet. Waagen 1883
rostrospiroid
 Spiriferida - Delthyrididae
Howellella sp. Kozlowski 1946
 Spiriferida - Cyrtiidae
Janius sp. Havlicek 1957