Description
Single shell elongate , ellipsoidal to spindle- shaped ; radial tubules at nodal points . FAMILY: CANNOSPHAERIDAE Haeckel, 1887 Two concentric shells united by numerous strands ; external shell latticed with polygonal meshes and internal one massive with a pylum . Radial spines arise from nodal points of cortical network .
Type species
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Raw text
Single shell elongate , ellipsoidal to spindle- shaped ; radial tubules at nodal points . FAMILY: CANNOSPHAERIDAE Haeckel, 1887 Two concentric shells united by numerous strands ; external shell latticed with polygonal meshes and internal one massive with a pylum . Radial spines arise from nodal points of cortical network .