Abstract
This work presents a taxonomic study and paleoecological reconstructions of the continental gastropod assemblages from two new Miocene localities in the German part of the North Alpine Foreland Basin, Bavaria. Riedensheim (next to the town of Rennertshofen) and Fasanerie (next to the town of Adelschlag). The fossil rich deposits belong to the Upper Freshwater Molasse (OSM), correlated to the regional biostratigraphic unit C+D (Burdigalian/Langhian;MN 5 in the European mammal Neogene zone). 17 gastropod species (almost exclusively pulmonates) were found in Adelschlag-Fasanerie and 35 species in Riedensheim. 13 species are shared by both assemblages. Of these, the following species have their distribution expanded in Germany: Azeca peneckei, Carychium (Carychium) galli, Vitrea ammoni and Urticicola perchtae;and possibly also Stagnicola cf. praebouiletti and Truncatellina cf. pantherae. Paleoecological reconstructions indicate a rich freshwater gastropod community in Riedensheim, with a well-vegetated area immediately surrounding the water body (which diminished in size with time), and a surrounding environment dominated by humid forest. The fauna from Adelschlag-Fasanerie, which was much impoverished in comparison, might represent flood plain and fluvial channel deposits. Finally, a comparison to the molluscan faunas of coeval and nearby localities (Adelschlag, Attenfeld, Sandelzhausen and Undorf) is provided.
Item Type: | Journal article |
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Faculties: | Geosciences > Department of Earth and Environmental Sciences |
Research Centers: | GeoBio-Center |
Subjects: | 500 Science > 550 Earth sciences and geology 500 Science > 500 Science |
ISSN: | 0077-7749 |
Language: | English |
Item ID: | 48891 |
Date Deposited: | 27. Apr 2018, 08:16 |
Last Modified: | 04. Nov 2020, 13:26 |