Glass sponges (Hexactinellida)

Glass sponges - class Hexactinellida are typical by tri-axial (triaxonn) spicules, composed of opal (in the fossil record by SiO2).

Author: Radek Vodrážka

Plocoscyphia		p4281
Porifera		p6347
Porifera	AD Horný (1956)	RH26
Porifera		FF408
Porifera		FF481
Protospongia		MM252
Protospongia		MM297
Pyritonema feistmanteli		YA920
Pyritonema feistmanteli		YA313
Pyritonema feistmanteli		p5125
Pyritonema		MŠ3362
Pyritonema		MŠ3364
Pyritonema		XA730
Pyritonema		MŠ3360
Pyritonema		MŠ3363
Pyritonema		MŠ3359
Pyritonema		MŠ3358
Pyrospongia cizkovicensis	Zahálka (1900), Pl. 3, fig. 83-85	p2545
Pyrospongia kosticensis	Zahálka (1900), Pl. 3, fig. 81-82	p2538
Pyrospongia vrbaei	Zahálka (1900), Pl. 2, fig. 75	p4211

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Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]