ammonites
Joachymia impatiens Community in the Prague Basin (Silurian of Czech Republic)

Where: Czech Republic (50.0° N, 14.4° E: paleocoordinates 47.0° S, 54.0° E)

• coordinate based on political unit

• local area-level geographic resolution

When: Monograptus transgrediens zone, Pridoli (418.7 - 416.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lime mudstone and calcareous shale

• Environment said to be similar to that for Dualina-Cardiolinka-Praecardium Comm. (i.e.soft bottom, low current activity, below wave base), but with "unfavorable" living conditions, esp. for deposit feeders. Perhaps mass shell accumulations indicate mass mortalities induced by episodes of abiotic conditions.
• "...dark, micritic limestone facies. Shells preserved disarticulated in the limestone lenses or nodules within the calcareous shales."

Collection methods: 99% of specimens belong to Joachymia impatiens.

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

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 14184: authorized by Michael Foote, entered by Michael Foote on 22.05.2002