Amphidiscosida
Amphidiscosida | |
---|---|
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Porifera |
Class: | Hexactinellida |
Subclass: | Amphidiscophora |
Order: | Amphidiscosida Schrammen, 1924[1] |
Amphidiscosida is an order of hexactinellid sponges characterized by amphidisc spicules, that is, spicules having a stellate disk at each end.[2] They are in the class Hexactinellida and the subclass Amphidiscophora[3] The creatures have been existing since the Ordovician period, and still flourishing today."[4]
Families
- Hyalonematidae Gray, 1857[5]
- Monorhaphididae Ijima, 1927[6]
- Pheronematidae Gray, 1870[7]
References
- ↑ Schrammen, A. (1924). Die Kieselspongien der oberen Kreide von Nordwestdeutschland. Volume 3. Berlin: Gebrüder Borntraeger.
- ↑ "Amphidiscophora".
- ↑ http://accessscience.com/search.aspx?rootID=790336
- ↑ "Hexactinellida: Fossil Record".
- ↑ Gray, J. E. (1857). Synopsis of the families and genera of axiferous zoophytes or barked corals. Proceedings of the Zoological Society of London, 25(1), 278–294.
- ↑ Ijima, I. (1927). The Hexactinellida of the Siboga Expedition. In Weber, M. (Ed.), Siboga-Expeditie (1–383). Leiden: E. J. Brill.
- ↑ Gray, J. E. (1870). Notes on anchoring sponges (in a letter to Mr. Moore). The Annals and Magazine of Natural History, [4]6(34), 309–312.
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