Abstract
The evolution of faunal provinces during the Ordovician shows a progressive reduction of the endemisms resulting from the progressive closing of the Proto-Atlantic ocean. The geographic and stratigraphic distributions of some representative algal groups support this interpretation and suggest some modifications for the proposed positions of the landmasses, particularly for North America, the Baltic shield and the Kazakhstan-Tadjikhistan area. The algal migrations seem to be related to the surface currents.
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Roux, A. (1991). Ordovician Algae and Global Tectonics. In: Riding, R. (eds) Calcareous Algae and Stromatolites. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-52335-9_17
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DOI: https://doi.org/10.1007/978-3-642-52335-9_17
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