| Reference |
| Geodia barretti |
| 2005-09-15 |
| Korsfjord, Norway (60° 10' 00'' N, 5° 10' 00'' E) |
| 200-400m |
| Hans Tore Rapp |
| ZMBN 77922 |
| Museum of Bergen, Norway |
| Ethanol |
| Hans Tore Rapp |
| 9th of January 2006 |
| Paco Cárdenas |
Morphological description (show/hide)
| massive, globular | | white | | white | | uniporal, grouped | | flat, smooth | | Radial skeleton near the surface, then confused. Triaenes are disposed radially near the surface. Oxyasters can be found throughout the choanosome. | | Ectocortex of spherasters, endocortex of sterrasters. Cortex is 0.5-0.65 mm thick. | | (min-average-max, N=30 unless otherwise stated) (a) oxeas I, straight or bent, length: 2125-3166-3575 µm; width: 50-58-75 µm. (N=20) (b) oxeas II, straight or bent, sometimes modified to styles, sometimes slightly centrotylote, 250-302-350 µm long, 6.5-8-10 µm thick. (c) dichotriaenes, rhabdome length: 3000-3200-3480 µm (N=3); width: 50-80-100 µm (N=11); protoclade: 120-194-250 µm long; deuteroclade: 40-196-300 µm long. (d) anatriaenes, rhabdome length: 2250-2947-3440 (N=11); width: 10-19-30 µm; clad length: 60-122-160 µm. no mesoprotriaenes found. | | (min-average-max, N=30) (e) sterrasters, spherical, 66-79-90 µm in diameter. (f) strongylasters, rough actines, 4.5-6-10 µm in diameter. (h) oxyasters, rough actines, diameter: 10-15-22 µm. |
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| On the in situ picture, one can see shallow oscular areas. The cortex section was made in that part of the sponge. |
Reference (show/hide)
| Cárdenas, P., Rapp, H.T., Schander, C. & Tendal, O.S. (2010) Molecular taxonomy and phylogeny of the Geodiidae (Porifera, Demospongiae, Astrophorida) — combining phylogenetic and Linnaean classification. Zoologica Scripta, 39, 89-106. |
| Cárdenas, P., Rapp, H.T., Klitgaard, A.B., Best, M., Thollesson, M. & Tendal, O.S. (2013) Taxonomy, biogeography and DNA barcodes of Geodia species (Porifera, Demospongiae, Tetractinellida) in the Atlantic boreo-arctic region. Zoological Journal of the Linnean Society, DOI: 10.1111/zoj.12056. |
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