Review of the Cretaceous Non-Marine Mollusca and Their Stratigraphical Distribution in Europe
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摘要

 


    


    

Non-marine mollusc faunas from the Cretaceous of Europe are listed and reviewed. Fifty-nine taxa are recorded from sixteen different deposits. The majority of sites are Early Cretaceous, principally from southern England, France and Spain. The freshwater fauna is dominated by unionid bivalves and viviparid gastropods. However pulmonate gastropods are also present at a number of localities. Analogous modern taxa indicate that Cretaceous freshwater habitats were well weeded, oxygen and nutrient-rich environments. Major change occurred in the composition of the fauna in both freshwater and marginal marine settings during the Hauterivian and Barremian. Some taxa, notably Margaritifera (s.l.) valdensis were widely dispersed across western Europe by the Barremian, when a European freshwater community had developed.


    


    

 

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