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How is the punctuated equilibrium a better model for dealing with gaps and missing links in fossil records?
Wiki User
∙ 10y ago
Answer: The late evolutionary professor of Palaeontology Stephen Jay Gould, proposed an evolutionary theory called 'punctuated equilibrium' to explain the evidence he found in the fossil record. His theory essentially meant that evolution proceeded by 'jumps' rather than gradually as Darwin proposed.
The evidence was the fact (still the case today), that the many intermediate forms that are required by evolution to proceed in the standard Darwinian manner just do not exist. Gould once stated that 'The extreme rarity of transitional forms in the fossil record persists as the trade secret of Paleontology. The evolutionary trees that adorn our textbooks have data only at the tips and nodes of their branches … in any local area, a species does not arise gradually by the gradual transformation of its ancestors; it appears all at once and "fully formed." (Stephen Jay Gould, Evolution's erratic pace, Natural History 86(5):14, May 1977.)
The idea was that these 'jumps' occurred in small isolated populations which were thus not as likely to be fossilised. Thus Gould together with Niles Eldredge, explained the large, seemingly unbridgeable gaps in the fossil record, the study of which he was an expert.Wiki User
∙ 9y ago
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∙ 12y agoWiki User
∙ 10y agoIt isn't.
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