Articles | Volume 4, issue 2
03 May 2007
03 May 2007

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


Interactive discussion

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Final-revised paper