page_title: Sachrang Formation
section_title: Sporomorphs
hierarchical_section_title: Sachrang Formation / Fossil content / Sporomorphs
caption_attribution_description: On humid sand in the dunes close to Xai-Xai, southern Mozambique. Ophioglossum polyphyllum&#160;?
context_page_description: The Sachrang Formation is a geological formation in Austria and Germany, dating to about 180 million years ago, and covering the lower and middle Toarcian stage of the Jurassic Period. It is among the most important formations of the Toarcian boundary in the Northern Alps realm, being the regional equivalent of the Posidonia Shale. The Sachrang Formation is included inside the major stratigaphic groups found on the Tirol Mountains on center Europe, where is equivalent to the Saubach Formation, also from the Toarcian stage. It is part of the series of formations with the presence of Toarcian black shales, being among the most important of the Alpine-Mediterranean domain. Those Shales on the Northern Calcareous Alps was sedimented based on a strong dependency on the overall palaeobathymetric situation of the region, as recovered by the microfacies types as well as in the composition of the biota. The deeper part is domain of the Sachrang Shales, with a basin radiolaria-rich lithologies, and a parallel series of submarine topographic highs a dominance of echinoderm-and mollusc-biomicrites and a strong increase in resedimentation can be observed.
context_section_description: Several plant leaves and fragments of wood wheren´t identified.
caption: Ophioglossum
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