Cheiopteria chelmiensis Community of the Chelm Borehole, Eastern Poland (Devonian of Poland)

Where: Poland (53.2° N, 23.5° E: paleocoordinates 16.6° S, 5.5° E)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Lochkovian (419.2 - 410.8 Ma)

• Monograptus angustidens-M.uniformis Biozones. 1208.4 to 1249.9 m in borehole.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; gray, calcareous shale

• "Low diversity...high population density shows unfavorable living conditions for other taxa. On some bedding planes the shells formed clumps. The environment was relatively shallow, below wave base, and with very low current activity. The restricted fauna may reflect dysaerobic conditions.
• "Disarticulated shells cover the bedding planes of dark-gray, calcareous shales."

Collection methods: Although community occurs throughout E. Poland, it seems clearly suggested in text that taxa listed occur in Chelm borehole itself.

Primary reference: L. Teller and A. J. Boucot. 1999. Polish Ludlow-Lower Devonian communities. In A. J. Boucot and J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 350-354 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 23017: authorized by Michael Foote, entered by Michael Foote on 08.07.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Bivalvia
 Modiomorphida - Cypricardiniidae
Cypricardinia cf. minuscula
 Ostreida - Pterineidae
Cheiopteria chelmiensis, Cheiopteria tenuis, "Leiopteria contraria" = Leptodesma (Leiopteria), Leiopteria opportuna
"Leiopteria contraria" = Leptodesma (Leiopteria) oyster
Leiopteria opportuna Barrande 1881 oyster
 Arcida - Parallelodontidae
Parallelodon insignis
 Cyrtodontida - Antipleuridae
Dualina convexa