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Echinoidea - Spatangoida - Schizasteridae
It was reranked as the family Schizasteridae by Fischer (1966), Smith (1995), Chiesa et al. (1995), Frassinetti and Covacevich (1999), Jagt (2000) and Kroh and Smith (2010).
It was assigned to Hemiasterina by Fischer (1966); to Spatangoida by Smith (1995), Chiesa et al. (1995), Frassinetti and Covacevich (1999) and Jagt (2000); and to Paleopneustina by Kroh and Smith (2010).
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.