Method
While the method has its greatest value when extant species are used for bracketing, the method itself does not not require that both bracketing groups have extant members, nor that the species or group to be bracketed is extinct. The only real requisite is that the two bracketing species/groups be better known, with regard to the trait in question, than the species to be bracketed is.
Read more about this topic: Phylogenetic Bracketing
Famous quotes containing the word method:
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—Mrs. Leslie Carter (1862–1937)
“We have not given science too big a place in our education, but we have made a perilous mistake in giving it too great a preponderance in method in every other branch of study.”
—Woodrow Wilson (1856–1924)
“The most passionate, consistent, extreme and implacable enemy of the Enlightenment and ... all forms of rationalism ... was Johann Georg Hamann. His influence, direct and indirect, upon the romantic revolt against universalism and scientific method ... was considerable and perhaps crucial.”
—Isaiah Berlin (b. 1909)