Litohlavy Formation, Prague Basin (Silurian to of Czech Republic)

Where: Czech Republic (50.1° N, 14.5° E: paleocoordinates 59.2° S, 65.1° E)

• coordinate based on political unit

• local area-level geographic resolution

When: Litohlavy Formation, Aeronian to Aeronian (440.8 - 433.4 Ma)

• "uppermost Aeronian, lower Telychian" but statement that "The Litohlavy was formed approximately within the period of the S. turriculatus-M.greistonensis biozones" would place it entirely within the Telychian. However, "the base...is heterochronous and may correspond to different levels within the R. linnaei Biozone."

• formation-level stratigraphic resolution

Environment/lithology: marine; black, argillaceous shale and burrowed, bioturbated, green, calcareous shale

• "...massive green calcareous shale to clayey limestone...black clayey shales with green calcareous shale intercalations...A feature of interest is the local occurrence of iron ooliths in the clayey shales at Housina Hill...black and green shale alternations in almost all known parts of the Prague Basin...A local exception is developed in Zelkovice Village, where parts of the sequence are formed of dark clayey shales with grey limestone intercalations...[similar descriptions follow] The alternation of black clayey shales and bioturbated green shales reflects periodical changes in sedimentary conditions...The bottom environement was generally more favourable for habitation by benthic organismsby comparison with [Zelkovice Fm.]. Bioturbation in the green shales documents the presence of burrowing invertebrates and deposit feeders..."

Primary reference: J. Kříž. 1992. Silurian field excursions: Prague Basin (Barrandian), Bohemia. National Museum of Wales, Geological Series 13:1-111 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 14086: authorized by Michael Foote, entered by Michael Foote on 13.05.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• "The fauna of the Litohlavy is known mainly from the black shales and is represented almost exclusively by graptolites and dendroids..."
unclassified
  -
Lingulata
 Lingulida - Lingulidae
Lingula comes
genus name in quotes
Pterobranchia
 Dendroidea - Dendrograptidae
 Dendroidea - Acanthograptidae