Bumastus-Sphaerexochus-Cheirurus Assemblage, Prague Basin: Sheinwoodian, Czech Republic

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Prototaxites sp. Dawson 1859
Chlorophyceae - Receptaculitidae
Ischadites sp. Eichwald 1861
Anthozoa
Anthozoa indet. Ehrenberg 1834
Scyphozoa - Conulariida
Conulariida indet. Miller and Gurley 1896
unclassified
Bryozoa indet. Ehrenberg 1831
Brachiopoda indet. Cuvier 1805
Strophomenata - Strophomenida
Strophomenida indet. Opik 1934
Rhynchonellata - Atrypida
Atrypida indet. Rzhonsnitskaya 1960
Rhynchonellata - Spiriferida
Spiriferida indet. Waagen 1883
Gastropoda
Gastropoda indet. Cuvier 1795
Cephalopoda
Nautiloidea indet. Agassiz 1847
Bivalvia
Pelecypoda indet. Goldfuss 1820
unclassified
Staruocephalus murchisoni
Trilobita - Phacopida - Cheiruridae
Cheirurus insignis
Cheirurus obtusatus
Deiphon fleur
Sphaerexochus sp. Beyrich 1845
Trilobita - Phacopida - Calymenidae
Diacalymene diademata
Trilobita - Phacopida - Phacopidae
Eophacops trapeziceps
Trilobita - Proetida - Aulacopleuridae
Nitidocare nitidum
Aulacopleura soror
Trilobita - Proetida - Tropidocoryphidae
Decoroproetus mirificus
Decoroproetus decorus (Barrande 1846)
Trilobita - Proetida - Proetidae
Interproetus vertumnus
Trilobita - Corynexochida - Illaenidae
Bumastus bouchardi
Trilobita - Odontopleurida - Odontopleuridae
Leonaspis dormitzeri
Leonaspis propinqua
Acidaspis grayi
Miraspis mira (Barrande 1846)
Ivanopleura dufrenoyi
Trilobita - Lichida - Lichidae
Hemiarges ambiguus
Trochurus speciosus Beyrich 1845
Dicranopeltis scabra (Beyrich 1845)
Ostracoda
Ostracoda indet. Latreille 1802
Pterobranchia
Graptolithina indet. Bronn 1849
Crinoidea
Crinoidea indet. Miller 1821
see common names

Geography
Country:Czech Republic
Coordinates: 50.0° North, 14.1° East (view map)
Paleocoordinates:56.3° South, 61.3° East
Basis of coordinate:based on nearby landmark
Geographic resolution:local area
Time
Period: Silurian Epoch: Wenlock
Stage: Sheinwoodian 10 m.y. bin: Silurian 2
*International age/stage:Late/Upper Sheinwoodian - Early/Lower Homerian
Key time interval: Sheinwoodian
Age range of interval: 433.4 - 430.5 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Motol
Stratigraphic resolution:formation
Stratigraphy comments: Zones Monograptus flexilis to M. testis (i.e. Testograptus testis).
Lithology and environment
Primary lithology:shelly/skeletal,gray grainstone
Lithology description: "Trilobite-rich light to dark grey biodetrital bituminous limestones form lenses and local layers within the volcano-carbonate facies, being commonly surrounded and intercalated by volcanoclastic rocks and lava flows."
Environment:marine indet.
Geology comments: "The composition of the assemblage, fragmentation of organic remains, and lithology point to a shallow water subtidal up to possibly intertidal environment in areas of active volcanic elevations. BA 3 or up to 2."
Taphonomy
Collection methods and comments
Collection excludes:some macrofossils
Reason for describing collection:paleoecologic analysis
Taxonomic list comments:Only trilobites are listed to genus level, but many other groups reported present.
Metadata
Database number:14123
Authorizer:M. Foote Enterer:M. Foote
Modifier:M. Foote Research group:marine invertebrate
Created:2002-05-15 14:58:05 Last modified:2006-09-15 15:14:05
Access level:the public Released:2002-05-15 14:58:05
Creative Commons license:CC BY
Reference information

Primary reference:
6191. 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]