Blastoidea - Cribroblastida - Cribroblastidae

Full reference: D. B. Macurda Jr. and J. Sprinkle. 2026. An Early Mississippian blastoid fauna from the Canadian Rockies. Journal of Paleontology 100:1-24

Parent taxon: Cribroblastidae according to D. B. Macurda and J. Sprinkle 2026

Sister taxa: Arcuoblastus, Cribroblastus, Decemoblastus, Euryoblastus, Heteroblastus, Iranoblastus

Subtaxa: Tholoblastus raaschi

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Type: Tholoblastus raaschi

Ecology: stationary intermediate-level epifaunal suspension feeder

Distribution: found only at Northern spur of Sampson Peak east of Lake Maligne (Carboniferous of Alberta)

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Specimen images are retrieved through the ePANDDA API.