Abstract
A synthesis of personal research concerning the peri-Pyrenean region and previously published data is presented as a series of palaeogeographic reconstructions. Subsequent to the progressive regression at the end of the Cretaceous the sea invaded three times parts of the earlier Senonian marine domain on both sides of the eastern Palaeo-Pyrenees. Pre-Cuisian climatic rewarming combined with Cuisian continental epeirogenic deformations resulted in major biogeographic modifications. During the Cuisian local tectonics forced the sea from the northern Pyrenean basin whereas in the southern Pyrenean basin the sea retreated much later as a consequence of the Pyrenean tectonic phase. However, the Pyrenean tectogenesis seems to have affected a much larger region, including the Alps. Shoreline migrations are compared and related to the geodynamic behaviour of the meridional and septentrional European provinces, in order to distinguish between tectonic and eustatic causes.
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