Morphological description (show/hide)
| Clathroid cormus of about 7 x 7 x 3 mm, consisting of loosely anastomosed tubes between ca. 300 and 800 ?m in diameter. The cormus is attached to the substrate and was not growing on a peduncle. | | white | | white | | collapsed in fixed specimen | | The tube wall is supported by overlapping triactines of two types | | Not differentiated | | Triactine I: Large equiradiate to parasagittal triactines, with cylindrical actines ending in rounded tips. The rounded-tipped triactines, equiradiate triactines are much more frequent than the parasagittal triactines. The unpaired actines of parasagittal triactines are longer or, less often, shorter than the paired actines. The triactines have cylindrical actines, which are often slightly undulated towards their distal tips, which are usually rounded. Triactine dimensions of these spicules are: 56 - 86.8 (SD 15.9) - 123 ?m x 5 - 5.7 (SD 0.4) - 7 ?m (n=20). Triactine II: Equiradiate triactines, with conical to cylindrical actines ending in sharp-pointed tips. These triactines are smaller than the round-tipped triactines, but can have wider actines . Dimensions of the sharp-tipped triactines are 15 - 44.3 - 73 ?m x 4 - 6.0 - 8 ?m (n=20) |
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