SPECIATION AND MACROEVOLUTION

@article{Mayr1982SPECIATIONAM,
  title={SPECIATION AND MACROEVOLUTION},
  author={Ernst Mayr},
  journal={Evolution},
  year={1982},
  volume={36}
}
  • E. Mayr
  • Published 1 November 1982
  • Biology
  • Evolution
Species and higher taxa represent, phenomenologically, two very different levels in the hierarchical organization of the living world. Ever since there has been a concept of evolution, there has been the problem how one can get from the species level to that of the higher categories. Darwin, the champion of gradualism, declared that it was a purely quantitative problem. If one would simply pile enough small differences on top of each other, one would eventually get something that is… 
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References

SHOWING 1-10 OF 24 REFERENCES
On variations and mutations
  • W. Scott
  • Linguistics
    American Journal of Science
  • 1894
VERY interesting and instructive analogies exist between the history, aims and methods of comparative philology, on the one hand and those of animal morphology, on the other. In both sciences the
The Genetics of Speciation at the Diploid Level
TLDR
It is advanced that a diploid species has two differing systems of genetic variability, and speciation may occur as selection operates on the perturbed genetic system to organize new coadapted closed systems which come to characterize the new species.
The promise of paleobiology as a nomothetic, evolutionary discipline'
TLDR
The formulation, by paleobiologists and with paleobiological data, of new macroevolutionary theories should end the subservience of passive transfer and contribute to the formulation of a new, general theory of evolution that recognizes hierarchy and permits a set of unifying principles to work differently at various levels.
Punctuated equilibria: an alternative to phyletic gradualism
Editorial introduction. Moving from populations to species. we recall that the process of speciation as seen through the hyperopic eyes of the paleontologist is an old and venerable theme. But the
GENETIC HOMEOSTASIS
TLDR
This change of outlook has caused the integrative properties of populations to assume paramount importance in evolutionary thought, not only for problems dealing with differentiation between populations, but with an even greater force for those relating to genetic phenomena within populations.
The role of phyletic change in the evolution of Pseudocubus vema (Radiolaria)
While the importance of allopatric speciation in the fossil record has long been underestimated, phyletic change within single unbranclhing lineages also occurs. The 50% increase in thoracic width
The Material Basis of Evolution
THE “Origin of Single Characters as Observed in Fossil and Living Animals” forms the subject of an illuminating essay in the American Naturalist for April, by Prof. H. F. Osborn. Since it contains
Evolution and the diversity of life
TLDR
This course will provide an introduction to the concepts and processes of biological evolution and consider the history of evolutionary thought, the scientific method, and creationism, intelligent design and evolution.
The Development of Darwin''s Theory: Natural History
At least one chemical compound is incorporated in the vapor before this latter passes along a heat-exchanger tube, the compound being constituted by a fluorinated derivative corresponding to the
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