Genus Placospongia Gray, 1867
- Placospongia Gray, J.E. 1867. On Placospongia, a new generic form of Spongiadae in the British Museum. Proceedings of the Zoological Society of London 1867: 127-129 [128].
Type species:
Placospongia melobesioides Gray, 1867 by monotypy.
Distribution
States
Queensland
Extra Distribution Information
Amphi-Atlantic, Mediterranean Sea, S Africa, Red Sea, Indian Ocean, Indio-Malayan region, W central and E Pacific Ocean.
IMCRA
Northeast Shelf Province (40), Northeast Shelf Transition (41)
Distribution References
- Vosmaer, G.C.J. & Vernhout, J.H. 1902. The Porifera of the Siboga-Expedition. I. The genus Placospongia. In Weber, M.W.C. (ed.). Siboga Expéditie Monographie 6A: 1-17 pls 1-5 [16]
- Wilson, H.V. 1925. Silicious and horny sponges collected by the U.S. Fisheries steamer Albatross during the Philippine Expedition, 1907–10. In Contributions to the biology of the Philippine Archipelago and adjacent regions. Bulletin of the United States National Museum 100(2/4): i-vii 273-532 pls 37-52 [346]
Diagnosis
Encrusting or lobate and branching sponges covered by smooth cortical plates separated by contractible grooves. Size from small crusts (average 25cm tall, 2.2mm thick) to erect branches (36cm tall, 1.5 cm and more in diameter). Live color of known species reddish brown to almost black. Skeleton structure radiate, tylostyle bundles running from a basal crust or a central axis (branching specimens) of selenasters toward the cortex and supporting the margins of cortical plates. Megascleres are tylostyles of two size classes the shorter ones in the ectosome), microscleres include selenasters of the cortex and base layer (or central axis) and choanosomal and ectosomal spirasters, spherasters, and spherules; developmental stages of selenasters occur throughout the choanosome.
ID Keys
See Family Placospongiidae Diagnosis.
Diagnosis References
Rützler, K. 2002. Family Placospongiidae Gray, 1867. pp. 196-200 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. [198]
General References
Becking, L.E. 2013. Revision of the genus Placospongia (Porifera, Demospongiae, Hadromerida, Placospongiidae) in the Indo-West Pacific. ZooKeys 298: 39–76
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) |