Denckmannites-Cromus Assemblage, Prague Basin (Silurian of Czech Republic)

Where: Czech Republic (50.0° N, 14.3° E: paleocoordinates 51.0° S, 56.8° E)

• coordinate based on political unit

• local area-level geographic resolution

When: Kopanina Formation, Ludfordian (425.6 - 423.0 Ma)

• topmost Kopanina

• formation-level stratigraphic resolution

Environment/lithology: marine; shelly/skeletal, gray lime mudstone and shelly/skeletal, gray limestone

• "According to Horny (1962), the cephalopod limestones represent the most offshore tongues of teh carbonate development. Kriz (1979) presumed a rather shallow wwater environment within the reach of surface currents, Turek (1974) inferred a slow sedimentation in a sublittoral zone below the wave base. Stratigraphical relationships to adjacent facies suggest a condensed sedimentation, probably BA 4."
• "Light to dark grey, strongly bituminous biodetrital and biomicritic limestones with linear arranged cephalopod shells and abundant bivalves (cardiolids are typical) yield only sporadic and fragmented trilobite remains..."

Collection methods: Similar to PBDB collection 14112 (Nautiloid-Bivalve biofacies. of Havlicek and Storch 1999), but not identical.

Primary reference: I. Chlupac. 1987. Ecostratigraphy of Silurian trilobite assemblages of the Barrandian area, Czechoslovakia. Newsletters on Stratigraphy 17(3):169-186 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 14129: authorized by Michael Foote, entered by Michael Foote on 15.05.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Only trilobites are listed to genus level, but many other groups reported present.
Show authors, comments, and common names
Trilobita
 Harpetida - Harpetidae
Bohemoharpes vittatus
Bohemoharpes vittatus Barrande 1852 trilobite
 Phacopida - Encrinuridae
Cromus intercostatus, Cromus bohemicus
Cromus bohemicus trilobite
 Phacopida - Phacopidae
Denckmannites volborthi
Bivalvia
 Cyrtodontida - Cardiolidae
Cardiolidae indet.
Cardiolidae indet. Hoernes 1884 clam
  -
"Pelecypoda indet." = Bivalvia
"Pelecypoda indet." = Bivalvia Linnaeus 1758 clam
Cephalopoda
 Nautiloidea -
Nautiloidea indet.
Nautiloidea indet. Agassiz 1847 nautiloid