Genus Sphaerotylus Topsent, 1898
- Sphaerotylus Topsent, E. 1898. Eponges nouvelles des Açores (première série). Mémoires de la Société Zoologique de France 11: 225-255 [244].
Type species:
Polymastia capitata Vosmaer, 1885 by monotypy.
Distribution
Extra Distribution Information
N Atlantic Ocean, Arctic, Subantarctic and Antarctic.
Distribution References
- Koltun, V.M. 1966. The Tetraxonida of the northern and fareastern seas of the U.S.S.R. pp. 1-112 38 pls in, Keys to the Fauna of the U.S.S.R. Published by the Zoological Institute, Akademia Nauk SSSR Moscow : Izdatel'stvo ‘Nauka'. [in Russian] [16]
- Koltun, V.M. 1976. Porifera. Part I. Antarctic sponges. Report of the British, Australian and New Zealand Antarctic Research Expedition, 1928–31 B Zoology & Botany 9(4): 147-198 pls 1-3 [168]
Diagnosis
Polymastiidae with aquiferous papillae. Primary skeleton composed of tracts of principal spicules and an ectosomal skeleton made up of an inner tangential layer of intermediary tylostyles and an outer layer of small tylostyles reinforced by exotyles, called spherotylostyles by Topsent. The principal skeleton of papillae is constituted by longitudinal tracts of principal spicules and an ectosomal skeleton constituted by a palisade of small tylostyles only. The inner layer of tangential spicules and the exotyles are absent in the papillae.
ID Keys
See Family Polymastiidae Diagnosis
Diagnosis References
Boury-Esnault, N. 2002. Family Polymastiidae Gray, 1867. pp. 201-219 in Hooper, J.N.A. & van Soest, R.W.M. (eds). Systema Porifera: A guide to the classification of sponges. New York : Kluwer Academic/Plenum Publishers Vol. 1. [205]
History of changes
| Published | As part of group | Action Date | Action Type | Compiler(s) |
|---|---|---|---|---|
| 29-Mar-2018 | 15-Dec-2011 | MOVED | ||
| 29-Mar-2018 | 13-Apr-2011 | MODIFIED | ||
| 12-Feb-2010 | (import) |