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      • Record: found
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      Soft-Bottom Epifaunal Suspension-Feeding Assemblages in the Late Cretaceous

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      Springer US

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          Most cited references 52

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          Animal Species and Evolution

           Ernst Mayr (1963)
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            A factor analytic description of the Phanerozoic marine fossil record

            Data on numbers of marine families within 91 metazoan classes known from the Phanerozoic fossil record are analyzed. The distribution of the 2800 fossil families among the classes is very uneven, with most belonging to a small minority of classes. Similarly, the stratigraphic distribution of the classes is very uneven, with most first appearing early in the Paleozoic and with many of the smaller classes becoming extinct before the end of that era. However, despite this unevenness, aQ-mode factor analysis indicates that the structure of these data is rather simple. Only three factors are needed to account for more than 90% of the data. These factors are interpreted as reflecting the three great “evolutionary faunas” of the Phanerozoic marine record: a trilobite-dominated Cambrian fauna, a brachiopod-dominated later Paleozoic fauna, and a mollusc-dominated Mesozoic-Cenozoic, or “modern,” fauna. Lesser factors relate to slow taxonomic turnover within the major faunas through time and to unique aspects of particular taxa and times.
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              THE BOTTLENECK EFFECT AND GENETIC VARIABILITY IN POPULATIONS.

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                Author and book information

                Book
                978-1-4757-0742-7
                978-1-4757-0740-3
                1983
                10.1007/978-1-4757-0740-3
                Book Chapter
                1983
                : 747-812
                10.1007/978-1-4757-0740-3_16

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