Echinoidea - Irregularia - Nucleolitidae

Parent taxon: Nucleolitidae according to P. M. Kier 1966

See also Kier 1962 and Sepkoski 2002

Sister taxa: Clypeopygus, Hemicara, Heteronucleus, Nucleolites, Oolopygus, Phyllobrissus, Plagiochasma, Pseudonucleus, Pseudosorella, Pygaulus, Pygopistes, Pygorhynchus

Subtaxa: Hypopygurus gaudryi

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Ecology: epifaunal grazer-deposit feeder

Distribution: there are no occurrences of Hypopygurus in the database

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Specimen images are retrieved through the ePANDDA API.