| 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
| Thecosiphonia ternata | | | | p4359 | | Thecosiphonia ternata | | | | p4366 | | Thecosiphonia ternata | | | | p4357 | | Tremabolites bursa | | | | p4290 | | Tremabolites bursa | | | | p4289 | | Tremabolites bursa | | | | p2547 | | Ventriculites angustatus | | | | p4293 | | Ventriculites angustatus | | | | p4194 | | Ventriculites angustatus | AD. Poukarová, H. & Bubík, M. (2012), Bc. práce(2012), Příloha č. 8, obr. 3 | | | HP24 | | Ventriculites angustatus | AD. Poukarová, H. & Bubík, M. (2012), Bc. práce(2012), Příloha č. 8, obr. 4 | | | HP25 | | Ventriculites angustatus | | | | p4191 | | Ventriculites angustatus | | | | p4181 | | Ventriculites angustatus | | | | p4338 | | Ventriculites angustatus | | | | p4292 | | Ventriculites angustatus | | | | p4200 | | Ventriculites angustatus | | | | p4159 | | Ventriculites angustatus | | | | p4339 | | Ventriculites angustatus | | | | p4298 | | Ventriculites angustatus | | | | p2539 | | Ventriculites angustatus | | | | p4198 |
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