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, Sontheimiidae, 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 Czechia (2), France (17), Germany (29), Greece (1), Poland (11), the Russian Federation (1), Spain (3), the United Kingdom (8)
• Jurassic of France (1), Germany (2), Spain (2)
• Triassic of Italy (1)
Total: 80 collections including 211 occurrences