| 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
| Pyrospongia vrbaei | | | | p4322 | | Pyrospongia vrbaei | Zahálka (1900), Pl. 1, fig. 71, 72, 73 | | | p2537 | | Pyrospongia vrbaei | | | | p4199 | | Pyrospongia vrbaei | Zahálka (1900), Pl. 1, fig. 70 | | | p2549 | | Pyrospongia vrboei | | | | p4157 | | Pyrospongia vrboei | Zahálka (1900), Pl. 3, fig. 81-82 | | | p4153 | | Rhizopoterion cervicorne | | | | p4172 | | Rhizopoterion cervicorne | | | | p4285 | | Rhizopoterion cervicorne | | | | p4307 | | Rhizopoterion cervicorne | | | | p4486 | | Rhizopoterion cervicorne | | | | p4308 | | Rhizopoterion cribrosum (Phillips, 1829) | AD. Poukarová, H. & Bubík, M. (2012), Bc. práce(2012), Příloha č. 8, obr. 7 | | | HP28 | | Rhizopoterion | AD. Poukarová, H. & Bubík, M. (2012), Bc. práce(2012), Příloha č. 8, obr. 8 | | | HP29 | | Scytalia pertusa | | | | p4361 | | Scytalia pertussa | | | | p4304 | | Solidinodus poctae | Zahálka (1889a), Pl. I, fig. 9 | | | p4175 | | Solidinodus poctae | | | | p4318 | | Solidinodus poctae | Zahálka (1889a), Pl. I, fig. 1 | | | p4183 | | Solidinodus poctae | | | | p4188 | | Solidinodus poctae | Zahálka (1889a), Pl. I, fig 10 | | | p4175 |
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