Family Penetrantiidae Silen 1946 (bryozoan)
Gymnolaemata - Ctenostomata - Penetrantiidae
Parent taxon: Stolonifera according to R. S. Bassler 1953
Sister taxa: Buskiidae, Immergentiidae
Subtaxa: Penetrantia
Type: Penetrantia
Ecology: stationary epifaunal suspension feeder
Distribution: found only at Tielrode deposit (Pliocene of Belgium)