The last 20 years the distribution of computing power to individuals through personal computers and the subsequent explosion in the production of scientific software dramatically changed the scientific work. The initial availability of expensive statistical software was replaced by inexpensive commercial packages – i.e., SPSS, SYSTAT, SAS, CART among others – which put in the hands of individuals with a little mathematical background and experience, the most powerful statistical procedures in the design of experimental projects, analysis of data and presentation of the results. Moreover the education of students and new scientists was facilitated by the advent of the educational (usually reduced in data-handling abilities and price software product) versions of the commercial packages and the free availability of specialized software. The PAST software program (Hammer et al. 2009) is one such a free package which incorporates a vast majority of analytical methods suitable for paleontological and current ecological work. Most of the methods in this package have been invented or refined in the last 40 years and are still in the research edge of scientific research. In the ecology, systematics and paleontology in particular, is very common for an introductory text book to reach at areas needing further research or modulation. Many cases and examples can be found in Legendre and Legendre (1983), Orloci and Kenkel (1985), Morrison (1984), Johnson and Wichern (1998), Hammer and Harper (2006).