†order Pachastrellida Reid 2004 (demosponge)
Full reference: R.E.H. Reid. 2004. Mesozoic and Cenozoic choristid demosponges. Treatise on Invertebrate Paleontology E revised(3):175-198
Parent taxon: Choristida according to R. M. Finks et al. 2004
Sister taxa: Ancorinida, Arthaberia, Cephaloraphiditidae, Craniellida, Fusiferella, Helminthophyllidae, Plakinida, Scolioraphididae, Ungulaspongia
Subtaxa: Costamorphiidae Pachastrellidae Theneidae
Ecology: stationary intermediate-level epifaunal suspension feeder
Distribution: