Diacanthaspis (Acantholomina) minuta-Otarion Assemblage, Prague Basin (Silurian to of Czech Republic)

Where: Czech Republic (49.9° N, 14.2° E: paleocoordinates 51.8° S, 57.3° E)

• coordinate based on political unit

• local area-level geographic resolution

When: Kopanina Formation, Gorstian to Gorstian (427.4 - 423.0 Ma)

• Lower Kopanina.

• formation-level stratigraphic resolution

Environment/lithology: marine; volcaniclastic, gray, calcareous mudstone and gray, cherty/siliceous limestone

• "Trilobites commonly preserved...slightly disarticulated or complete...Fauna, usually concentrated in thin laminae...The facies is typically transitional between the carbonate and shale developments and its palaeogeographical position is analogous as that with the Mirapis- and Aulacopleura konincki Assemblages of Wenlockian age (a rather deep subtidal, lesser energy BA 4).
• "The sediments show a predominance of brown and grey-brown lamintaed calcareous mudstones with tuffaceous admixture and frequent intercalations anc concretions of ine-grained grey limestones or dolomites, locally silicified."

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 14126: 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
unclassified
  -
Porifera indet.
Porifera indet. Grant 1836
Deuteropoda
  -
Ostracoda indet.
Ostracoda indet. Latreille 1802 ostracod
Trilobita
 Odontopleurida - Odontopleuridae
Diacanthaspis (Acantholomina) minuta, Ceratocephala sp.
Ceratocephala sp. Warder 1838 trilobite
 Proetida - Otarionidae
Otarion diffractum
Otarion diffractum Zenker 1833 trilobite
 Proetida - Proetidae
Prionopeltis praecedens
Prionopeltis praecedens Bouček 1935 trilobite
Strophomenata
 Strophomenida - Shaleriidae
"Protoshaleria sp." = Shaleria
"Protoshaleria sp." = Shaleria Caster 1939
Rhynchonellata
 Atrypida -
Atrypida indet.
Atrypida indet. Rzhonsnitskaya 1960
Cephalopoda
 Nautiloidea -
Nautiloidea indet.
Nautiloidea indet. Agassiz 1847 nautiloid
Graptolithina
  -
Graptolithina indet.
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily