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PART ONE THE PALEOZOIC 2 Articulated columns of a sea lily (Poteriocrinus sp.) from Carboniferous shale exposed in railway cutting no. 2 at Nagyvisnyó in northern Hungary (close to original size). The Paleozoic was the golden age for sea lilies such as these, and they inhabited oceans around the world in huge numbers. Some of the known species had stems reaching 20 meters in length, formed by several thousand disklike or cylindrical columnals. Cups and branches articulated to the end of these stems. These lilies were extremely characteristic elements of the marine biota in the Paleozoic. ...

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