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Université de Fribourg

Formation and taphonomy of human footprints in microbial mats of present-day tidal-flat environments: implications for the study of fossil footprints

Marty, Daniel ; Strasser, André ; Meyer, Christian A.

In: Ichnos, 2009, vol. 16, no. 1-2, p. 127 - 142

his study concerns the formation, taphonomy, and preservation of human footprints in microbial mats of present-day tidal-flat environments. Due to differences in water content and nature of the microbial mats and the underlying sediment, a wide range of footprint morphologies was produced by the same trackmaker. Most true tracks are subjected to modification due to taphonomic processes, leading...

Université de Fribourg

The paleoecological significance of nerineoid mass accumulations from the Kimmeridgian of the Swiss Jura Mountains

Waite, Richard ; Wetzel, Andreas ; Meyer, Christian A. ; Strasser, André

In: Palaios, 2008, vol. 23, no. 8, p. 548-558

The Kimmeridgian shallow-water carbonates of the Swiss Jura Mountains display stratigraphic levels containing mass accumulations of nerineoidean gastropods. The macro- and microfacies of the rocks with these nerineoidean assemblages suggest that their occurrence was related to water depth, physical energy within the habitat, sedimentation rate, substrate stability, and food supply. Typical...