BG - Special Issue - Primitive life and ancient radiations

BG - Special Issue

Primitive life and ancient radiations
Editor(s): B. Lefebvre and F. Marin

The unique skeleton of siliceous sponges (Porifera; Hexactinellida and Demospongiae) that evolved first from the Urmetazoa during the Proterozoic: a review W. E. G. Müller, Jinhe Li, H. C. Schröder, Li Qiao, and Xiaohong Wang Biogeosciences, 4, 219-232, 2007 Abstract Final Revised Paper (PDF, 1640 KB) Discussion Paper (BGD)		03 May 2007
A geochemical modelling study of the evolution of the chemical composition of seawater linked to a "snowball" glaciation G. Le Hir, Y. Goddéris, Y. Donnadieu, and G. Ramstein Biogeosciences, 5, 253-267, 2008 Abstract Final Revised Paper (PDF, 7232 KB) Discussion Paper (BGD)		21 Feb 2008