dbo:abstract
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- The Ciechocinek Formation is a Jurassic (lower to middle Toarcian) geologic formation which extends across the Baltic coast from Grimmen, Germany, to Nida, Lithuania, with its major sequence in Poland and boreholes in Kaliningrad. Dinosaur species uncovered here, including Emausaurus and other unclassified genus. In Poland, the main basin lacks marine microfauna. The Ciechocinek Formation in the Częstochowa-Zawiercie area reveals the remains of a wide range of prehistoric environments; the Fore-Sudetic Monocline region must have been an extensive bay similar to Lake Maracaibo in Venezuela. The basin's shore zone was a flat, muddy, marshy coastal plain. The region has the remains of the Wrêczyca River, which was active for most of the Pliensbachian/Toarcian period. At the Brody-Lubienia borehole (Lubienia), which once formed part of the river's east side, an alluvial system ended at a delta and discharged into a shallow marine bay and lagoon. A number of phyllopods and fossilized plant roots have been found here, where they were discharged by the river. Paleosol indicates that the lagoon had a maximum depth of about 6 metres (20 ft). (en)
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