Eocrinoidea - Ampheristocystidae
Full reference: T. J. Frest. 2005. Ampheristocystis, a Silurian (Lower Wenlock) eocrinoid (Echinodermata, Blastozoa) from Indiana. Geological Journal 40:301-329
Parent taxon: Eocrinoidea according to T. J. Frest 2005
Sister taxa: Acanthocystites, Ascocystitida, Ascocystitidae, Balangicystis, Balantiocystis, Bolboporites, Cardiocystites, Cigara, Cryptocrinitidae, Cymbionites, Gogiida, Haimacystis, Hexedriocystis, Imbricata, Lapillocystites, Lichenoididae, Lingulocystidae, Llanocystis, Luhocrinus, Marjumicystis, Palaeocystitidae, Paracryptocrinites, Peridionites, Pilocystites, Polyptychella, Rhipidocystidae, Ridersiidae, Simonkovicrinus, Trachelocrinida, Ubaghsicystis
Subtaxa: Ampheristocystis
Type: Ampheristocystis
Ecology: stationary epifaunal suspension feeder
Distribution: found only at Holocystitid-Coronoid Assoc., Upper Osgood Shale (Silurian of Indiana)