Family Siphoniidae d'Orbigny 1851 (demosponge)
Demospongiae - Tetralithistida - Siphoniidae
Parent taxon: Tetracladina according to R. M. Finks et al. 2004
Sister taxa: Astrocladiidae, Chenendoporidae, Phymaraphiniidae, Plinthosellidae, Protetraclisidae, Radiocelliidae, Sulcastrella, Theonellidae, Vermiculissimum
Subtaxa: Lerouxiinae Phymatellinae Siphoniinae
Type: Siphonia
Ecology: stationary epifaunal suspension feeder
Distribution:
• Oligocene of Ukraine (1 collection)
• Eocene of Italy (1)
• Cretaceous of the Czech Republic (2), France (14), Germany (28), Greece (1), Poland (9), the Russian Federation (1), Spain (3), the United Kingdom (1)
• Jurassic of France (1), Germany (2), Spain (2)
• Triassic of Italy (1)
• Permian of Italy (1)
Total: 68 collections including 199 occurrences