Classification modified from "World Trichoptera Check-list" http://entweb.clemson.edu/database/trichopt/hierarch.htm, illustrating the current understanding of the classification of extant genera (previous to this work).
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"I'm a biologist and, to me, it doesn't matter whether an animal is extant or extinct.
But its conclusion may have rested solely upon the "absence" of an "extant or pending" repatriation agreement without giving due weight to the likelihood of successful future negotiations.
Any analysis of a problem, whether extant or solved, requires an understanding of the terms employed.
We evolved the same way every other extant or extinct species that ever existed evolved--up to a point.
Given a collection of extant species and their phylogenetic tree, each species (extant or ancestral) in possesses a DPR network.
Therefore, each gene g, extant or ancestral, belongs to a species denoted by s(g).
Digitimes, ever eavesdropping on the water cooler talk at big manufacturers, reports that HP's webOS-powered TouchPad may be launched as soon as April, two months earlier than the only extant previous estimate.
Although in general recent phylogenetic studies of the group, based on mitochondrial gene trees of extant species, support previous morphological-based classifications [18] [21], the phylogenetic relationships among some of the clades are still not well understood.
