The Nature and Origin of Supraspecific Taxa Revisited—with Special Reference to Trilobita

摘要: Phylogenetic analysis of fossil and recent taxa has much to tell us, course, about the origin, persistence, ultimate demise monophyletic groups. Coupled with biostratigraphic biogeographic data, outlines, at least, history biological diversity have become fairly clear over past 200 years or so concerted research. But science (to paraphrase Ernst Mach) concerns itself not only material entities universe—in evolutionary history, spatiotemporal distributions their interrelationships; is also concerned causal interactions among components universe. In case evolution, such are be found organisms within taxa, physical world’s ecosystems—the processes that generate history. my view, we collectively still a long way go towards framing an accurate theory evolution based on solid evidence life amassed preceding several centuries. other words, there rather wide gap between canonical what think know actual life.