Dlouha hora near Beroun (Silurian of Czech Republic)

Also known as Encrinuraspis beaumonti-Smooth Atrypid Community, Prague Basin

Where: Czech Republic (50.0° N, 12.9° E: paleocoordinates 53.6° S, 57.3° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Lobograptus scanicus graptolite zone, Lower Member (Kopanina Formation), Gorstian (427.4 - 425.6 Ma)

• Lower Kopanina, early Ludlow.

• member-level stratigraphic resolution

Environment/lithology: marine; shelly/skeletal grainstone and argillaceous limestone

• "Decrease in volcanic activity...provided favorable conditions for carbonate sedimentation and the development of fauna on the NW flank of the 'syncline' whereas calc. shale sed. dominated by graptolites continued along the SE limb...The high dominance, low diversity atrypid and athyrid lenses may represent BA 2, quiet water, restrictive conditions...[various aspects of shell preservation discussed, as well as shell accumulation indicating rough water in places...] Prevalence of small, smooth brachiopods and numerous trilobites is consistent with BA 3-4 position that graded laterally in calc. shales dom. by graptolites..."
• "The sequence of calcareous shales, commonly with tuffaceous intercalations, occupying the lowermost part of the Kopanina Formation, is overlain by bioclastic limestones of the E. beaumonti Horizon of the lower Kopanina Formation..." "...biosparitic limestone and laminated, argillaceous limestones..."

Size class: macrofossils

Collection methods: Trilobites based in part on Chlupac (1987) (ref. 6191) (his Encrinuraspis-Eophacops and Encrinuraspis-Metacalymene-Prantlia assemblages). Relative abundances of brachiopods given by the authors.

Primary reference: V. Havlicek and P. Storch. 1999. Silurian and Lochkovian communities in the Prague basin (Barrandian area, Czech Republic). in A. J. Boucot and J. D. Lawson, eds. Paleocommunities--a case study from the Silurian and Lower Devonian. Cambridge University Press, Cambrdige. 200-228 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 14106: authorized by Michael Foote, entered by Michael Foote on 14.05.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Anthozoa
 Tabulata -
Tabulata indet. tabulate coral
 Rugosa -
Rugosa indet. horn coral
Conodonta
  -
Graptolithina
  -
Crinoidea
  -
Crinoidea indet. Miller 1821 Sea lily
Gastropoda
  -
Gastropoda indet. Cuvier 1795 snail
 Murchisoniina - Loxonematidae
Loxonema sp. Phillips 1841 snail
 Murchisoniina - Hormotomidae
Coelocaulus sp. Oehlert and Oehlert 1888 snail
 Euomphalina - Ophiletidae
Lytospira sp. Koken 1896 snail
 Euomphalina - Craspedostomatidae
Spirina sp. Kayser 1889 snail
Bivalvia
 Modiomorphida - Modiomorphidae
Butovicella sp. Kríž 1965 clam
 Cyrtodontida - Stolidotidae
Mila sp. Barrande 1881 clam
 Cyrtodontida - Cardiolidae
Cardiola sp. Broderip 1839 clam
  -
"Pelecypoda indet." = Bivalvia
"Pelecypoda indet." = Bivalvia Linnaeus 1758 clam
Cephalopoda
 Nautiloidea -
Nautiloidea indet. Agassiz 1847 nautiloid
Rostroconchia
  -
Rostroconchia indet. Pojeta et al. 1972
Strophomenata
 Strophomenida - Strophochonetidae
 Strophomenida - Leptostrophiidae
"Leptostrophiella nebulosa" = Mesoleptostrophia
"Leptostrophiella nebulosa" = Mesoleptostrophia
 Strophomenida - Rafinesquinidae
Leptaena croma Havlicek and Storch 1990
Rhynchonellata
 Pentamerida - Camerellidae
 Pentamerida - Gypidulidae
 Pentamerida - Pentameridae
Rhipidium sp. Schuchert and Cooper 1931
 Pentamerida - Subrianidae
 Spiriferida - Tenellodermidae
 Spiriferida - Cyrtiidae
 Spiriferida - Ambocoeliidae
 Spiriferida - Reticulariidae
 Athyridida - Athyrididae
 Athyridida - Dayiidae
 Atrypida - Atrypidae
Atrypa sp. Dalman 1828
 Atrypida - Atrypinidae
"Gracianella umbrella" = Gracianella, "Claratrypa clarula" = Gracianella
"Gracianella umbrella" = Gracianella
"Claratrypa clarula" = Gracianella
 Atrypida - Septatrypidae
Atrypoidea linguata, "Septatrypa alumna" = Septatrypa, "Septatrypa serva" = Septatrypa, "Septatrypa caprilupa" = Septatrypa, "Septatrypa sappho" = Septatrypa, "Dubaria megaera" = Septatrypa, "Dubaria saphina" = Septatrypa, Cromatrypa pentagona, Cromatrypa orbis
Atrypoidea linguata von Buch 1834
"Septatrypa alumna" = Septatrypa
"Septatrypa serva" = Septatrypa
"Septatrypa caprilupa" = Septatrypa
"Septatrypa sappho" = Septatrypa
"Dubaria megaera" = Septatrypa
"Dubaria saphina" = Septatrypa
Cromatrypa orbis Havlíček 1987
 Rhynchonellida - Trigonirhynchiidae
 Rhynchonellida - Innaechiidae
Lingulata
 Lingulida - Lingulidae
 Lingulida - Discinidae
Schizotreta sp. Kutorga 1848
 Acrotretida - Biernatidae
"Caenotreta sp." = Opsiconidion
"Caenotreta sp." = Opsiconidion Ludvigsen 1974
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
Trilobita
  -
Trilobita indet. Walch 1771 trilobite
 Lichida - Lichidae
"Dicranogmus simplex" = Borealarges simplex
"Dicranogmus simplex" = Borealarges simplex Barrande 1846 trilobite
 Proetida - Tropidocoryphidae
 Proetida - Scharyiidae
Scharyia sp. Pribyl 1946 trilobite
 Proetida - Proetidae
Prantlia longula Hawle and Corda 1847 trilobite
Prionopeltis praecedens Bouček 1935 trilobite
"Ryckholtia sp." = Rijckholtia Donovan and Van Den Hoek Ostende 2010 trilobite
 Proetida - Otarionidae
Otarion diffractum Zenker 1833 trilobite
 Harpetida - Harpetidae
Bohemoharpes ovatus Boucek 1935 trilobite
Bohemoharpes ungula Sternberg 1833 trilobite
 Corynexochida - Styginidae
 Corynexochida - Illaenidae
Bumastus hornyi trilobite
 Phacopida - Phacopidae
 Phacopida - Encrinuridae
 Phacopida - Cheiruridae
Deiphon sp. Barrande 1846 trilobite
 Phacopida - Calymenidae
 Odontopleurida - Odontopleuridae
Malacostraca
 Phyllocarida -
Deuteropoda
  -
Ostracoda indet. Latreille 1802 ostracod
Chitinozoa
 Chitinozoa -
Chitinozoa indet. Nõlvak 2007