| Reference |
| Pachymatisma johnstonia |
| 2005-06-05 |
| Rathlin Island, Northern Ireland (55° 18' 36'' N, 6° 16' 12'' W) |
| 25m |
| Bernard Picton |
| Mc3367 |
| Ulster Museum, Belfast, Northern Ireland |
| Ethanol |
| Bernard Picton |
| 12th of February 2007 |
| Paco Cardenas |
Morphological description (show/hide)
| massive, lobate | | white | | white | | uniporal | | slightly compressible. | | Triaenes are more or less disposed near the surface; this arrangement is less obvious in the interior of the sponge. Oxyasters can be found throughout the choanosome. | | Ectocortex of microrhabds poorly developed, endocortex of sterrasters well developed. Total cortex is less than 1.5 mm thick. | | Strongyles to oxeas: 572-1272 μm long / 7-23 μm thick; Ortho/Plagiotriaenes, rhabdome: 427-883 μm long, clads: 179-427 μm long. | | Microrhabds: 13-65 μm long / 2-5 μm thick; oxyasters I: 30-57 μm (diameter); oxyaster II: 17-26 μm (diameter); sterrasters (length/width/thickness): 91-113 μm/70-91 μm/57-72 μm |
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Collection in Ruecallan, North Wall, roof of small cave.
This specimen is white because it is protected from the light. |
Reference (show/hide)
| Cárdenas, P., Xavier, J., Tendal, O.S., Schander, C., Rapp, H.T., 2007. Redescription and resurrection of Pachymatisma normani (Demospongiae, Geodiidae), with remarks on the genus Pachymatisma. Journal of the Marine Biological Association of the United Kingdom 87, 1511-1525. |
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