Full reference: A. Agassiz. 1904. The Panamic Deep Sea Echini. Memoirs of the Museum of Comparative Zoology at Harvard College 31:1-243
Parent taxon: Spatangoida according to A. Kroh and A. B. Smith 2010
Sister taxa: Allotoxaster, Amoraster, Apoxypetalum, Archaeopneustes, Asterostomatina, Barnumia, Brissidina, Brissoides, Cagaster, Cestobrissus, Cottreaucorys, Echinocoridae, Enichaster, Gonzalezaster, Hemiasteridae, Hemiasterina, Homoeopetalus, Hypselaster, Kertaster, Leymeriaster, Micrasterina, Mundaster, Murraypneustes, Neoproraster, Niponaster, Nudobrissus, Orthaster, Palaeostomidae, Paraheteraster, Peraspatangus, Peroniaster, Pictaviechinus, Pliotoxaster, Pseudogibbaster, Pseudolinthia, Pseudowashitaster, Pusillaster, Royasendia, Somalechinus, Somaliasteridae, Spatagobrissus, Tessieria, Toxasteridae, Toxasterina, Wuarnia
Subtaxa: Paleopneustidea Periasteridae Prenasteridae Schizasteridae
Ecology: slow-moving shallow infaunal deposit feeder-detritivore