PDF Ebook The Major Features of Evolution, by George Gaylord Simpson
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The Major Features of Evolution, by George Gaylord Simpson
PDF Ebook The Major Features of Evolution, by George Gaylord Simpson
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from Wikipedia: George Gaylord Simpson (June 16, 1902 - October 6, 1984) was an American paleontologist. Simpson was perhaps the most influential paleontologist of the twentieth century, and a major participant in the modern evolutionary synthesis, contributing Tempo and mode in evolution (1944), The meaning of evolution (1949) and The major features of evolution (1953). He was an expert on extinct mammals and their intercontinental migrations. He anticipated such concepts as punctuated equilibrium (in Tempo and mode) and dispelled the myth that the evolution of the horse was a linear process culminating in the modern Equus caballus. He coined the word hypodigm in 1940, and published extensively on the taxonomy of fossil and extant mammals. Simpson was influentially, and incorrectly, opposed to Alfred Wegener's theory of continental drift. He was Professor of Zoology at Columbia University, and Curator of the Department of Geology and Paleontology at the American Museum of Natural History from 1945 to 1959. He was Curator of the Museum of Comparative Zoology at Harvard University from 1959 to 1970, and a Professor of Geosciences at the University of Arizona until his retirement in 1982.
- Sales Rank: #3126861 in Books
- Published on: 1953-12-01
- Ingredients: Example Ingredients
- Original language: English
- Number of items: 1
- Binding: Hardcover
- 434 pages
Most helpful customer reviews
3 of 3 people found the following review helpful.
A must read for evolutionary ecologists
By Steven M. Vamosi
I read a number of papers and books while studying for my qualifying exam and this was my favourite by a long shot. Simpson writes in an informative yet entertaining manner and many of his ideas (such as those about adaptive zones) are still informative today. A great synthesis of a broad subject by a writer well versed in ecology, evolution, and palaeontology. If you want a good feeling for "state of the art" then and now, read this book, then read Schluter's The Ecology of Adaptive Radiation.
2 of 2 people found the following review helpful.
ANOTHER IMPORTANT EVOLUTIONARY THEORY BOOK BY G.G. SIMPSON
By Steven H Propp
George Gaylord Simpson (1902-1984) was one of the most influential American paleontologists of the twentieth century. This is one of his most significant theoretical works.
He notes that "The rate of evolution of any character or combination of characters may change markedly at any time in phyletic evolution, even though the direction of evolution remain the same."
Acknowledging that there are `quite rigid limitations on what a mutation can accomplish," he notes that seemingly major changes in Drosophila fruit flies "does not produce new structures, wings ... but only produces the wings characteristic of the system in an additional place." He also admits candidly that "Where relatively large mutations are concerned, they usually do not persist or do not come to characterize whole populations unless they are accompanied by more numerous smaller mutations tending to modify and to integrate the effects of the larger mutations."
Stephen Jay Gould and Niles Eldredge's theory of punctuated equilibrium accepted some of Simpson's statements, such as "...in rare instances small populations would provide for possible rapid changes over short periods of time."
Simpson asserts that "...most evolutionary change is adaptive.... An essential factor is the entrance, figuratively or literally, of populations into environments that are in some respect new to them." In most cases, "...when one group replaces another of similar adaptive type, a common phenomenon in the record, much the most probable interpretation is that one of the other evolved elsewhere and is a rather recent migrant where found." But "There is no reasonable alternative to the conclusion that when a trend stops short of other limits, it has reached an adaptive limit."
Simpson---who wrote an entire book on Horse evolution (Horses: The Story of the Horse Family in the Modern World and through Sixty Millions Years of History)---rejects many common statements about horse evolution: "The most famous of all equid trends, `gradual reduction of the side toes,' is flatly fictitious. There was no such trend in any line of Equidae." He adds that `eohippus was NOT a horse, (and) is about as good an ancestor for Rhinoceros as for Equus."
Simpson's book is important for anyone interestested in evolutionary theory.
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