| 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
| Ventriculites angustatus | | | | p4299 | | Ventriculites angustatus | | | | p4202 | | Ventriculites antustatus | | | | p4345 | | Ventriculites bohemicus | | | | p2540 | | Ventriculites radians | | | | p4340 | | Ventriculites radiatus | | | | p4485 | | Ventriculites radiatus | | | | p4287 | | Ventriculites radiatus | | | | p4150 | | Ventriculites radiatus | | | | p4297 | | Ventriculites radiatus | | | | p4337 | | Ventriculites radiatus | | | | p4203 | | Ventriculites radiatus | | | | p4204 | | Ventriculites radiatus | | | | p2551 | | Ventriculites radiatus | | | | p4330 | | Ventriculites radiatus | | | | p4332 | | Ventriculites radiatus | | | | p4151 | | Ventriculites radiatus | | | | p4363 | | Ventriculites | | | | p4201 | | Ventriculites | AD. Poukarová, H. & Bubík, M. (2012), Bc. práce(2012), Příloha č. 8, obr. 6 | | | HP27 | | Ventriculites | | | | p4335 |
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