Destruction of phyla precedes origin of species
There were 75-100 phyla, but over time some disappeared. This graph depicts the Cambrian explosion where most phyla appeared and how over time some phyla disappeared. This is graphically the pattern that is central to Darwin’s doubt. It destroys the notion of Darwinian gradualism: http://www.veritas-ucsb.org/library/origins/IMAGES/H.gif Remarkably, as phyla disappeared, new species appeared. This is a curious pattern. Some have labeled this phenomenon “disparity precedes diversity”. NOTES 1. http://en.wikipedia.org/wiki/Phylum In biological classification: phylum is a taxonomic rank below kingdom and above class. Traditionally, in botany the term division is used instead of “phylum”, although in 1993 the International Botanical Congress accepted the designation “phylum”. …. Phyla can be thought of as grouping organisms based on general specialization of body plan. 2. Read More ›