Leiopteria contraria Community in the Chelm borehole, eastern Poland (Silurian to of Poland)

Where: Poland (53.2° N, 23.5° E: paleocoordinates 16.2° S, 4.3° E)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Pridoli to Pridoli (423.0 - 410.8 Ma)

• Both Pridolian and Lochkovian are spanned: Monograptus bouceki, M. perneri, M. angustidens, and M. uniformis biozones.

Environment/lithology: marine; calcareous mudstone

• "Shallow, influenced by current activity."
• "Disarticulated shells occur on bedding planes of dark, calcareous mudstone."

Collection methods: Despite distribution, text seems to imply that all faunal elements are found at type locality.

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 23028: authorized by Michael Foote, entered by Michael Foote on 08.07.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Because of the vertical spread of these beds, it is not possible to tell with certainty from ref. 6630 which graptolites are present.
Show authors, comments, and common names
Bivalvia
 Cyrtodontida - Antipleuridae
Dualina cf. consors
 Ostreida - Pterineidae
Cheiopteria tenuis, Cheiopteria chelmiensis, Actinopteria migrans, Actinopteria innotata, "Leiopteria contraria" = Leptodesma (Leiopteria)
Actinopteria migrans oyster
A. migrans migrans
"Leiopteria contraria" = Leptodesma (Leiopteria) oyster
 Myalinida - Lunulacardiidae
Lunulacardium undulatum, Lunulacardium evolvens
Graptolithina
  -
Graptolithina indet.