Isakov Beds at S-D boundary section in Dniestr Valley: Ludfordian, Ukraine

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Rhombifera - Callocystitidae
Apiocystites angelini Jaekel 1899
recombined as Lovenicystis angelini
Rhynchonellata - Athyridida - Rhynchospirinidae
Rhynchospira baylei
replaced by Rhynchospirina
Rhynchonellata - Athyridida - Dayiidae
Dayia navicula (Sowerby 1839)
Rhynchonellata - Rhynchonellida - Hebetoechiidae
Sphaerirhynchia wilsoni (de Sowerby 1816)
Rhynchonellata - Spiriferida - Delthyrididae
Delthyris elevatus
Trilobita - Phacopida - Calymenidae
Calymene aspera
see common names

Geography
Country:Ukraine
Coordinates: 49.6° North, 23.9° East (view map)
Paleocoordinates:49.6° North, 23.9° East
Basis of coordinate:based on political unit
Geographic resolution:outcrop
Time
Period:Silurian Epoch:Ludlow
Stage:Ludfordian 10 m.y. bin:Silurian 2
*Epoch:Late/Upper Ludlow
*Local age/stage:Early/Lower Skala
Key time interval:Ludfordian
Age range of interval:425.60000 - 423.00000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Isakov Beds
Stratigraphic resolution:formation
Lithology and environment
Primary lithology: dolomite
Secondary lithology:dolomitic marl
Lithology description: "...dolomites and dolomitic marls with thin mudstone and tuffogenic clay bands; 34 m thick."
Environment:marine indet.
Taphonomy
Collection methods and comments
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:13872
Authorizer:M. Foote Enterer:M. Foote
Modifier:M. Foote Research group:marine invertebrate
Created:2002-04-30 11:38:57 Last modified:2006-09-15 15:13:14
Access level:the public Released:2002-04-30 11:38:57
Creative Commons license:CC BY
Reference information

Primary reference:
6163. O. I. Nikiforova. 1977. Podolia. In A. Martinsson (ed.), The Silurian-Devonian boundary (IUGS Publication, Series A, Number 5) 52-64 [M. Foote/M. Foote/P. Wagner]