Dayia-Isorthis Community in Nova Beds in Vidukle-61 & Virbalis-5 boreholes (Silurian of Lithuania)

Where: Lithuania (55.4° N, 22.9° E: paleocoordinates 17.5° S, 0.9° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Monograptus tauragensis zone, Nova Beds Member (Dubysa Formation), Ludlow (427.4 - 423.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; gray, green marl and limestone

• "Occurs in greenish-gray and gray marls with organogenic-detrital (biomorphic) limestone inclusions belonging to the third facies zone. [Seems to replace Dayia community when there's less terrigenous material.] [Probably BA 3-4.] An environment less silty, less turbid, possibly more oxygenated as well, than that occupied by the Dayia Community...Most of the D. n. specimens are ticulated, but commonly disarticulated shells of other brachiopods indicates a moderate level of turbulence just above wave base, with normal oxygen levels [green-gray]."

Collection methods: I have not included abundance data given by author.

Primary reference: P. Musteikis and J. J. Paskevicius. 1999. Brachiopod communities of the Lithuanian Silurian. In A. J. Boucot, J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 305-326 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 13772: authorized by Michael Foote, entered by Michael Foote on 24.04.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Rhynchonellata
 Athyridida - Dayiidae
Dayia navicula
Dayia navicula Sowerby 1839
 Atrypida - Septatrypidae
Atrypoidea sp.
Atrypoidea sp. Mitchell and Dun 1920
 Protorthida - Skenidiidae
Skenidioides lewisii
Skenidioides lewisii Davidson 1848
 Orthida - Dalmanellidae
Isorthis sp.
Isorthis sp. Kozlowski 1929
Cephalopoda
 Nautiloidea -
Nautiloidea indet.
Nautiloidea indet. Agassiz 1847 nautiloid
Trilobita
  -
Trilobita indet.
Trilobita indet. Walch 1771 trilobite