The Early Evolutionary History of Planktonic Foraminifera

1998 ◽  
Vol 44 (2) ◽  
pp. 207 ◽  
Author(s):  
Felix Gradstein ◽  
M. K. Boudagher-Fadel ◽  
E. T. Banner ◽  
J. E. Whittaker
Keyword(s):  
Evolutionary History ◽  
Planktonic Foraminifera ◽  
History Of

The Early Evolutionary History of Planktonic Foraminifera

1997 ◽  
Author(s):  
M. K. BouDagher-Fadel ◽  
F. T. Banner ◽  
J. E. Whittaker
Keyword(s):  
Evolutionary History ◽  
Planktonic Foraminifera ◽  
History Of

Mosaic evolution in the middle Miocene planktonic foraminifera Fohsella lineage

Paleobiology ◽  
2018 ◽  
Vol 44 (2) ◽  
pp. 263-272
Author(s):  
Weimin Si ◽  
William A. Berggren ◽  
Marie-Pierre Aubry
Keyword(s):  
Evolutionary History ◽  
Middle Miocene ◽  
Planktonic Foraminifera ◽  
Phenotypic Traits ◽  
Geographic Ranges ◽  
History Of ◽  
Morphologic Evolution ◽  
Coiling Direction ◽  
Directional Trend ◽  
Selection Of

AbstractRecent studies have shown that modes of evolution, namely directional trend, random walk, and stasis, vary across morphologic traits and over the geographic range of a taxon. If so, is it possible that our interpretation of evolutionary modes is actually driven by our selection of traits in a study? In an attempt to answer this question, we have restudied the middle Miocene planktonic foraminifera Fohsella lineage, an iconic example of gradual morphologic evolution. In contrast to previous studies that have focused on the gross morphology as embodied by the edge view of tests, we analyze here multiple phenotypic traits chosen because their biologic and ecologic significance is well understood in living populations. We find that traits in the lineage did not evolve in concert. The timing and geographic pattern of changes in shape, coiling direction, size, and ecology were different. The evolution of this lineage is a mosaic combination of different evolutionary modes for different traits. We suggest that overemphasis on the evolution of some single trait, such as the edge-view outline, from narrow geographic ranges has significantly underestimated the dynamic evolutionary history of this group.

Elaborating the role of reflection and individual differences in the study of folk-economic beliefs

2018 ◽  
Vol 41 ◽  
Author(s):  
Kevin Arceneaux
Keyword(s):  
Decision Making ◽  
Individual Differences ◽  
Cognitive Processes ◽  
Evolutionary History ◽  
Behavioral Responses ◽  
History Of ◽  
Economic Beliefs

AbstractIntuitions guide decision-making, and looking to the evolutionary history of humans illuminates why some behavioral responses are more intuitive than others. Yet a place remains for cognitive processes to second-guess intuitive responses – that is, to be reflective – and individual differences abound in automatic, intuitive processing as well.

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