CHENGJIANG BIOTA AND CAMBRIAN EXPLOSION

摘要

The Cambrian Explosion is real Fossil evidence from Chengjiang reveals an assemblage of the fauna, which is represented by at least 100 species. They belong to animal phyla that are still extant, including sponges, cnidarians, ctenophorans, priapulids, annelids(?), arthropods,brachiopods, phoronids, echinoderms and chordates. There are even a number of animal body plans at phylum or subphylum level that are extinct, including: medusiform Eldonia, Facivermis, Tardipolyda, chanccelariids, Dinomischus, hyoliths, Vetuliculid,