动物界总共大约35-45个门吧,根据分类系统不一样会有不同.
推荐几个作为参考
Valentine, James W. (2004). On the Origin of Phyla. Chicago: University Of Chicago Press.
"The Variety of Life" by Colin Tudge, Oxford University Press, 2000
J.P. Euzéby. "List of Prokaryotic names with Standing in Nomenclature: Phyla"
http://www.bacterio.cict.fr/classifphyla.html