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Oolopygus

Echinoidea - Nucleolitidae

Taxonomy
Oolopygus was named as a genus. It is not extant.

It was reranked as Catopygus (Oolopygus) by Sanchez-Roig (1953).

It was assigned to Catopygus by Sanchez-Roig (1953); to Nucleolitidae by Kier (1966); and to Cassiduloida by Sepkoski (2002).

Synonymy list
YearName and author
1953Catopygus (Oolopygus) Sanchez-Roig p. 145
1966Oolopygus Kier p. U505
2002Oolopygus Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
Ambulacraria
phylumEchinodermata
subphylumEchinozoa
classEchinoidea()
RankNameAuthor
subclassEuechinoideaBronn 1860
superorderAcroechinoidea()
Carinacea
Irregularia()
Microstomata
Neognathostomata
familyNucleolitidae
genusOolopygus

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.

Diagnosis
No diagnoses are available