• Home
• Taxonomy
• • Bacteria
  • Animals
  • • Protozoa
    • Metazoans
    • • Cnidarians
      • Lobopodians
      • Arthropods
      • Molluscs
      • Echinoderms
      • Chordates
      • Hemichordates
      • Brachiopods
      • Bryozoans
      • Annelids
      • Priapulids
      • Archaeocyathids
      • Porifera
      • • Hexactinellida
        • Calcarea
        • Demospongeans
  • Plants
  • Trace fossils
  • Problematica
  • Fakes
• Palaentology-search
• Map search
• Stratigraphy
• Minerals
• Links
• References
• Contacts
• Site map

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

Author: Radek Vodrážka

Hexactinellida Schmidt, 1870 p4112

Protospongia MM297

In the Virtual Museum there are total 245 samples