Orthoceras Quarry near Praha-Lochkov (Silurian of Czech Republic)

Also known as Cardiola conformis Community, Prague Basin

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: Monograptus fragmentalis graptolite zone, Upper Member (Kopanina Formation), Ludfordian (425.6 - 423.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; shelly/skeletal limestone

• "Orthocone cephalopod shells were well oriented by S/SW to N/NE currents. Very condensed, slow sedimentation, and even some breaks in sedimentation were involved. Population densities high, diversity high. The envrironment was shallow water, subtidal, influenced by relatively strong current activity but protected against stronger wave action."
• "Mostly disarticulated shells occur in biodetrital limestones with abundant nektobenthic cephalopods."

Size class: macrofossils

Collection methods: Authors give life modes and abundances for bivalves. List as entered includes tables 16.8 (Orthoceras Quarry) and 16.9 (Praha-Pankrac) as well as other taxa mentioned in text.

Primary reference: J. Kříž. 1999. Bivalvia communities of Bohemian type from the Silurian and Lower Devonian carbonate facies. In A. J. Boucot. J. D. Lawson (ed.), Paleocommunities -- A case study from the Silurian and Lower Devonian 229-252 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 14164: authorized by Michael Foote, entered by Michael Foote on 20.05.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Bivalves are focus of taxon list. Other taxa mentioned but not listed in detail.
Show authors, comments, and common names
Trilobita
 Phacopida - Phacopidae
Denckmannites sp.
Denckmannites sp. Wedekind 1911 trilobite
 Phacopida - Encrinuridae
Cromus sp.
Cromus sp. Barrande 1852 trilobite
 Phacopida - Cheiruridae
"Cerauroides sp." = Crotalocephalus
"Cerauroides sp." = Crotalocephalus Salter 1853 trilobite
Bivalvia
 Modiomorphida - Modiomorphidae
Butovicella medea
 Myalinida - Lunulacardiidae
Patrocardia sp.
Patrocardia sp. Fischer 1887 clam
 Ostreida - Vlastidae
Praeostrea bohemica
Praeostrea bohemica Barrande 1881 oyster
 Cyrtodontida - Cardiolidae
Cardiolinka bohemica, "Cardiola conformis" = Cardiolita conformis, Isiola fluctuans, Cardiola cornucopiae, Cardiola navicula
"Cardiola conformis" = Cardiolita conformis Barrande 1881 clam
 Cyrtodontida - Spanilidae
Tetinka sp., Spanila sp.
Tetinka sp. Barrande 1881 clam
Spanila sp. Barrande 1881 clam
 Cyrtodontida - Antipleuridae
Dualina longiuscula, Dualina sp.
Dualina sp. Barrande 1881 clam
  -
"Pelecypoda indet." = Bivalvia
"Pelecypoda indet." = Bivalvia Linnaeus 1758 clam
Gastropoda
  -
Gastropoda indet.
Gastropoda indet. Cuvier 1795 snail
Rhynchonellata
 Rhynchonellida - Trigonirhynchiidae
Stenorhynchia infelix
 Orthida - Orthidae
Orthostrophia mulus
 Athyridida - Athyrididae
Jarovathyris canaliculata
 Atrypida - Lissatrypidae
Lissatrypa postfumida
Graptolithina
  -
Graptolithina indet.