Three-dimensional photographs of fossils (Part 1): Gastropods from the Paratethys Ocean

Dr Robert Strum (Austria) About 23Ma, the Paratethys Ocean covered a large area, including what is now the Vienna basin and Alpine Foreland. This mostly shallow ocean was a habitat for a large number of plant and animal species, which included numerous marine gastropods, some of which are discussed in this article. This is the first of three articles on three dimensional photograph of fossils. In this article, to give the reader a better impression of their volume and shape, the fossil shells have been photographed by using the stereoscopic technique I describe in Three dimensional photography of fossils (Part 3): Ammonites from the Northern Limestone Alps of Austria. Today, beautiful shells with various shapes and patterns, of recent marine gastropods, can be collected in large numbers along Mediterranean and tropical coasts. While this seems normal to us, finding marine molluscs in Austrian sandpits, far away from any ocean, is a little more surprising. Of course, the simple answer is that these shells are fossils from the ocean referred to above, which once covered what is now Central Europe. The fossils commonly originate from the Tertiary period, which lasted from 65Ma to about 1.8Ma. More precisely, the fossils are from the Eggenburgian of the Miocene (23Ma to 5.3Ma), named after Eggenburg, a lovely village north-west of Vienna. (The Eggenburgian is a Lower Miocene stage of the Central Paratethys regional chronostratigraphic classification.) Fig. 1. Map exhibiting the position of Eggenburg in Austria and the arrangement of single sampling localities and related sights:1. … Read More

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