摘要:The 5th Regional Symposium of the International Fossil Algae Association was organised by Davide Bassi and Anna Fugagnoli in the Dipartimento delle Risorse Naturali of the University of Ferrara. This symposium follows the tradition of successful regional meetings previously held in Granada (1989), Munich-Vienna (1993), Cracow (1997), and Cluj-Napoca (2001) (http://www.ku. edu/~ifaa/). Presentations were organized in three sessions: 1) General themes 2) Calcareous red algae 3) Calcareous green algae