%0 Journal article %A Keupp, Helmut %A Jenisch, Angela %A Herrmann, Regina %A Neuweiler, Fritz %A Reitner, Joachim %T Microbial carbonate crusts - a key to the environmental analysis of fossil spongiolites? %R 10.23689/fidgeo-776 %J Facies %V 29 %U http://hdl.handle.net/11858/00-1735-0000-0001-33A5-D %~ FID GEO-LEO e-docs