01044nam a2200265   4500001000800000005001700008008000500025010001700030020002600047040001900073050002600092082001200118245023300130260006400363300003900427504004100466650005100507650004500558650002500603650003900628650002700667650002700694700002600721700003100747154140920170721092608.0000   a   91007594   a0521402425 (hardback)  aUOELcDLCdDLC00aQE721.2.E85bE37 199100a56322004aThe Early evolution of Metazoa and the significance of problematic taxa :bproceedings of an international symposium held at the University of Camerino, 27-31 March 1989 /cedited by Alberto M. Simonetta and Simon Conway Morris.  aCambridge ;aNew York :bCambridge University Press,c1991.  aix, 296 p. :bill., maps ;c31 cm.  aIncludes bibliographical references. 0aEvolutionary paleobiologyxGeology2Congresses 0aPaleontology, StratigraphicxCongresses. 0aMetazoaxCongresses. 0aInvertebrates, FossilxCongresses. 0aEvolutionxCongresses. 0aPhylogenyxCongresses.1 aSimonetta, Alberto M.2 aConway Morris, S.q(Simon)