Parent taxon: Eublastoidea according to J. Waters and D. B. Macurda 2026
See also Bauer et al. 2019, Beaver et al. 1967, Bohatý et al. 2024, Fay and Wanner 1967, Jell 1983 and Sepkoski 2002
Sister taxa: Stomatoblastida, Tubuloblastida
Subtaxa: Angulatoblastus Artuschisma Astrocrinidae Brachyschismatidae Codasteridae Dolichoblastus Kazachstanoblastus Leptoschisma Mastoblastus Neoschismatidae Nymphaeoblastidae Orophocrinidae Pachyblastus Phaenoschismatidae Tympanoblastus Xenoblastus
Ecology: stationary intermediate-level epifaunal suspension feeder
Distribution:
• Permian of Australia (13 collections), Bolivia (1), Indonesia (5), Oman (3), the Russian Federation (1), Timor-Leste (1)
• Carboniferous of Belgium (1), Canada (1: Nunavut), Ireland (2), Kazakhstan (1), the United Kingdom (3), United States (17: Arkansas, Illinois, Indiana, Iowa, Kentucky, Missouri, New Mexico, Oklahoma, Tennessee, Texas)
• Devonian of Australia (2), Canada (2: Ontario), China (2), Czechia (3), Germany (2), Mongolia (1), Morocco (1), South Africa (4), Spain (2), United States (11: Indiana, Kentucky, New York, Tennessee)
• Silurian of United States (15: Indiana, Iowa, Missouri, Oklahoma, Tennessee)
Total: 94 collections including 134 occurrences