In response to J Bruner's post K. Kinman ranged the field including: > I immediately thought of Class Anomalocarea > (Phylum Arthropoda). Interesting. What arthropod characters do you see in that sac-like body? It must be the 'mouth' then. But it is too poorly delineated to be made a convincing Anomalocaris-type mouth - or that of a fossil lamprey. -- Geoff Read <g.read at niwa.cri.nz>