Astrononion sp.found in a sand pit near Waldlaubersheim, Mainzer Becken, Germany Rupelian, Oligocene Alzey Formation Taxon ProfileSpiral and umbilical view of different specimen of Astrononion sp. Forams found and images contributed by Kai Nungesser The classification is based upon: Grimm, Kirsten I.; Grimm, Matthias C.: Die Alzey-Formation (Rupelium, Mainzer Becken) am Steigerberg bei Eckelsheim: Sedimentologische, sequenzstratigrahische und biostratigraphische Untersuchungen eines transgressiven Küstensystems, Geologica et Palaeontologica, 2005
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