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Euzonosoma

Ophiuroidea - Encrinasteridae

Taxonomy
Euzonosoma was named by Spencer (1930) [Sepkoski's age data: O u C Tour Sepkoski's reference number: 2]. It is not extant. Its type is Euzonosoma orbitoides. It is the type genus of Euzonosomatidae. It was considered monophyletic by Dean Shackleton (2005).

It was synonymized subjectively with Encrinaster by Jell and Theron (1999).

It was assigned to Euzonosomatidae by Spencer (1930) and Lehmann (1957); to Encrinasterinae by Harper and Morris (1978); to Oegophiurida by Sepkoski (2002); and to Encrinasteridae by Owen (1965), Spencer and Wright (1966) and Dean Shackleton (2005).

Synonymy list
YearName and author
1930Euzonosoma Spencer
1957Euzonosoma Lehmann pp. 24-25
1965Euzonosoma Owen p. 552
1966Euzonosoma Spencer and Wright p. U86
1978Euzonosoma Harper and Morris p. 156
2002Euzonosoma Sepkoski, Jr.
2005Euzonosoma Dean Shackleton p. 83

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
Ambulacraria
RankNameAuthor
phylumEchinodermata
subphylumAsterozoa
classOphiuroidea
familyEncrinasteridae
genusEuzonosoma

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
J. Dean Shackleton 2005Broad groove crossing oral ambulacral transverse bar; loss of aboral plating; loss of aboral plate spines.