PBDB Collection

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

Where: Poland (51.2° N, 23.5° E)

• Paleocoordinates: 3.8° N, 29.9° W (Wright 2013)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Monograptus uniformis - Monograptus angustidens graptolite zone, Lochkovian (419.2 - 410.8 Ma)

• Monograptus angustidens-M. uniformis biozones.

• group of beds-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; 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."

Size class: macrofossils

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: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names

Trilobita
Phacopida - Acastidae	Acastella cf. tiro Acastella cf. tiro Richter and Richter 1954 trilobite
Bivalvia
Nuculanida - Cucullellidae	"Cleidophorus unisulcus" = Nuculites "Cleidophorus unisulcus" = Nuculites clam
Nuculanida - Nuculanidae	"Leda sp." = Nuculana "Leda sp." = Nuculana Link 1807 pointed nut clam
Arcida - Parallelodontidae	Parallelodon insignis Parallelodon insignis clam
Ostreida - Pterineidae	Leiopteria opportuna, Cheiopteria chelmiensis Leiopteria opportuna Barrande 1881 oyster [entered as Leipteria opportuna] Cheiopteria chelmiensis oyster
Myalinida - Ambonychiidae	Mytilarca elongata Mytilarca elongata clam
Carditida - Astartidae	Astarte sp. Astarte sp. Sowerby 1816 clam
Modiomorphida - Modiomorphidae	Modiolopsis sp. Modiolopsis sp. Hall 1847 clam
Modiomorphida - Cypricardiniidae	Cypricardinia cf. minuscula Cypricardinia cf. minuscula clam
Pterobranchia
Graptoloidea - Monograptidae	Monograptus angustidens Monograptus angustidens Pribyl 1940 graptolite
Graptoloidea - Cryptograptidae	Linograptus posthumus Linograptus posthumus graptolite Linograptus posthumus posthumus