From editor or global species database
Diagnosis Test thin-plated; ovate in outline. Apical disc strongly disjunct with large interambulacral plates separating bivium from trivium. Ambulacra narrow and with microscopic rudimentary pore-pairs only. Peristome small, subcircular and subcentral, with slightly inturned edges; ambulacral plating simple throughout. Plastron plating undifferentiated. Position of periproct marginal to supramarginal. Aboral surface densely covered in fine granulation with scattered small primary tubercles. [details]
Etymology From the Greek notia (= southern) and -disaster [from Disaster a basal atelostomate echinoid] [details]
Fossil range Aptian [details]
Taxonomy Attribution to a specific family of stem-group Atelostomata uncertain [details]