Dayia-Isorthis Community in Sesupe Beds. in Virbalis-5 borehole: Ludlow, Lithuania

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Strophomenata - Strophomenida - Sowerbyellidae
Eoplectodonta sp. Kozlowski 1929
Eoplectodonta sp. Kozlowski 1929
Rhynchonellata - Orthida - Dalmanellidae
Isorthis amplificata Walmsley 1965
recombined as Isorthis (Tyersella) amplificata
Rhynchonellata - Atrypida - Glassiidae
Glassia sp. Davidson 1881
Rhynchonellata - Athyridida - Dayiidae
Dayia navicula (Sowerby 1839)
Lingulata
Lingulata indet. Gorjansky and Popov 1985
given as "Linguloid"
see common names

Geography
Country:Lithuania
Coordinates: 54.6° North, 22.8° East (view map)
Paleocoordinates:18.1° South, 1.4° East
Basis of coordinate:based on nearby landmark
Geographic resolution:local area
Time
Period:Silurian Epoch:Ludlow
10 m.y. bin:Silurian 2
*Epoch:Early/Lower Ludlow
Key time interval:Ludlow Zone: Monograptus scanicus
Age range of interval:427.40000 - 423.00000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Dubysa Member:Sesupe Beds
Stratigraphic resolution:group of beds
Lithology and environment
Primary lithology:gray,green marl
Secondary lithology: "limestone"
Includes fossils?Y
Lithology description: "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]."
Environment:marine indet.
Taphonomy
Collection methods and comments
Reason for describing collection:paleoecologic analysis
Collection method comments: I have not included abundance data given by author.
Metadata
Database number:13774
Authorizer:M. Foote Enterer:M. Foote
Modifier:M. Foote Research group:marine invertebrate
Created:2002-04-24 15:47:38 Last modified:2006-09-15 15:14:05
Access level:the public Released:2002-04-24 15:47:38
Creative Commons license:CC BY
Reference information

Primary reference:

6146. 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]