Parallelodon insignis Community in the Chelm borehole, eastern Poland (Devonian of Poland)

Where: Poland (51.2° N, 23.5° E: paleocoordinates 18.0° S, 6.9° E)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Lochkovian (419.2 - 410.8 Ma)

• Monograptus angustidens-M. uniformis biozones.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; gray, calcareous shale

• "...shallow, below wave base, with very low current activity. An overall dysaerobic env. is suspected to account for thelow diversity and absence of most widespread benthic groups."
• "Disarticulated shells present on the bedding planes of dark-gray, calcareous shales."

Collection methods: Graptolites based on pp. 9-10 in PBDB ref. no 6630.

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 23019: authorized by Michael Foote, entered by Michael Foote on 08.07.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Phacopida - Acastidae
Bivalvia
 Nuculanida - Nuculanidae
"Leda sp." = Nuculana
"Leda sp." = Nuculana Link 1807 pointed nut clam
 Nuculanida - Cucullellidae
"Cleidophorus unisulcus" = Nuculites
"Cleidophorus unisulcus" = Nuculites clam
 Ostreida - Pterineidae
Leiopteria opportuna Barrande 1881 oyster
[entered as Leipteria opportuna]
 Myalinida - Ambonychiidae
 Arcida - Parallelodontidae
 Carditida - Astartidae
Astarte sp. Sowerby 1816 clam
 Modiomorphida - Cypricardiniidae
 Modiomorphida - Modiomorphidae
Modiolopsis sp. Hall 1847 clam
Pterobranchia
 Graptoloidea - Cryptograptidae
Linograptus posthumus graptolite
Linograptus posthumus posthumus
 Graptoloidea - Monograptidae
Monograptus angustidens Pribyl 1940 graptolite