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Ophiopetra

Ophiuroidea - Ophiurida - Aplocomidae

Taxonomy
Ophiopetra was named by Enay and Hess (1962) [Sepkoski's age data: J Kimm-u]. It is not extant. Its type is Ophiopetra lithographica. It is the type genus of Ophiopetrinae.

It was assigned to Ophiodermatidae by Enay and Hess (1962) and Spencer and Wright (1966); to Aplocomidae by Hess (1965) and Hess (1972); to Ophiurida by Sepkoski (2002); and to Ophiopetrinae by Hess and Meyer (2008).

Synonymy list
YearName and author
1962Ophiopetra Enay and Hess
1965Ophiopetra Hess p. 175
1966Ophiopetra Spencer and Wright p. U98
1972Ophiopetra Hess p. 39
2002Ophiopetra Sepkoski, Jr.
2008Ophiopetra Hess and Meyer p. 36

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
Ambulacraria
phylumEchinodermata
subphylumAsterozoa
RankNameAuthor
classOphiuroidea
orderOphiurida()
infraorderChilophiurina
familyAplocomidae
subfamilyOphiopetrinae
genusOphiopetra

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
ReferenceDiagnosis
H. Hess and C. A. Meyer 2008Teeth conical; 3-4 arm spines, length up to two arm segments; dorsal arm plates triangular with convex distal edge, in contact only in proximal part of arms.