Demospongiae - Agelasida - Cliefdenellidae
Parent taxon: Agelasida according to B. Senowbari-Daryan and J. K. Rigby 2015
See also Finks et al. 2004, Kiessling 2004, Rigby et al. 2008, Rigby and Potter 1986 and Rigby et al. 1988
Sister taxa: Actinostromarianinidae, Actinostromariidae, Amphorithalamiidae, Angullongiidae, Aphrosalpingidae, Astroscleridae, Auriculospongiidae, Blastoporella, Catenispongiidae, Columnocoelia, Cryptocoeliidae, Exotubispongiidae, Fissispongiidae, Fluegelispongites, Girtycoeliidae, Girtyocoeliidae, Globucatenulaiidae, Glomocystospongiidae, Guadalupiidae, Incertuspongia, Intrasporeocoeliidae, Kemeria, Maeandrostiidae, Milleporellidae, Noritubispongiidae, Olangocoeliidae, Palermocoeliidae, Parastylothalamiidae, Pharetrospongiidae, Phragmocoeliidae, Polyedridae, Preperonidellidae, Radiotrabeculoporidae, Sebargasiidae, Sestrostomellidae, Sobralispongia, Solenolmiidae, Sphaeropontiidae, Spicidae, Stellispongiellidae, Tabasiidae, Tataouinella, Tenuipariespongia, Thamnonema, Thaumastocoeliidae, Virgolidae
Subtaxa: Cliefdenella Khalfinaea Rigbyetia
Type: Cliefdenella
Ecology: stationary epifaunal suspension feeder
Distribution:
• Silurian of Kazakhstan (1 collection)
• Ordovician of Australia (3), United States (9: Alaska, California)
Total: 13 collections including 14 occurrences