The Precambrian Emergence of Animal Life: A Geobiological Perspective Posted on July 1, 2014 by UHNAI Webmaster in Gaidos, E., Dubuc, T., Dunford, M., McAndrew, P., Padilla-Gamino, J., Studer, B., Weersing, K., Stanley, S. (). The Precambrian Emergence of Animal Life: A Geobiological Perspective. , 5,