levado em consideracao e que o autor nao comenta sobre ancestralidade em comum que os organismos tem, ele apenas segue uma transecto partindo dos seres menos evoluidos para os mais evoluidos. Em algumas partes o autor se estendeu muito em suas frases, onde, em praticamente um paragrafo inteiro nao havia pontos finais. Alem disto, ele cometeu erros ao escrever nomes cientificos, iniciando o epiteto especifico com letra maiuscula. E, na figura 1 ele escreveu varias vezes cerebo ao inves de cerebro. Finalizando, creio que este medico, por ser doutor em neurologia, deveria ter procurado se aprofundar mais no assunto evolucao do sistema nervoso nos seres vivos, que e algo essencial de saber visto que ele trabalha com isto. Apesar das pesquisas a parte e confirmacao de que alguns conceitos abordados por ele sao em parte erroneos, obtive muito conhecimento na leitura deste artigo de revisao.Para quem se interessar, segue o link do artigo:http://www.scielo.br/pdf/rbp/v28n4/12.pdf______________________________________________________________________________________In English: Im posting a digest I did for the discipline of Animal Physiology, of my Biological Sciences course, for which I received a low grade. I believe that my opinion wasnt clearly understood, because I considerate that the paper had some parts erroneously written. Its a Guilherme Carvalhal Ribas paper review, entitled Considerations on the phylogeny of the nervous system, behavior and the emergence of consciousness. There I go. Phylogenetic analysis makes that be allowed the release of evolutionary hypotheses. Thus, with this mechanism appears assumptions about the enormous biodiversity that we have today. The morphological heterogeneities are studied in phylogeny and, in its basis, appears the derivation concepts, where some beings are considered more or less derivatives, being inconvenient to characterize them as more or less evolved, because all the organisms go through evolution process. The paper Considerations on the phylogeny of the nervous system, behavior and the emergence of consciousness, was written by Guilherme Carvalhal Ribas, doctor of neurology by the University of Sao Paulo. He is/was professor at several universities in Brazil and other countries, such as the University of Cambridge, England. Currently, among others functions, he works at Albert Einstein Hospital, in Sao Paulo, and is a member of the Brazilian Society of Neurosurgery. In this review paper, Ribas had as a goal explain, based on available literature, on the aspects of the phylogenetic evolution of the nervous system of living beings, specially characterizing the human being and development of their cognitive functions that influence their behavior. He commented that the size and organization of the human nervous system are what distinguish them from others animals, and, that trhe grooves and fissures provided the development of the cortex, responsible for the more complex activities. Something interesting to note is the theoretical research related to primates, where the author lists the primitive habits of these animals to the developing of the nervous system. According to the author, Australopithecus afarensis, specie which Lucy belongs, the oldest primate fossil ever found, had a volume of, in average, of 400cm2, size of newborn humans. It should be emphasized that Ribas also comments on the beginning of the communication among