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Ophryaster

Asteroidea - Valvatida - Goniasteridae

Synonymy list
YearName and author
1913Ophryaster Spencer
1966Ophryaster Spencer and Wright p. U62
1992Ophryaster Breton p. 245
2002Ophryaster Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
Ambulacraria
phylumEchinodermata
subphylumAsterozoa
RankNameAuthor
classAsteroidea
subclassAmbuloasteroidea
infraclassNeoasteroidea()
superorderValvatacea
orderValvatida
familyGoniasteridae
genusOphryaster

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
G. Breton 1992Long slender arms with a progresive trasition to the disk. Interbrachial arc regularly rounded. Marginal plats long and narrow, numerous. Median marginal plates relatively low. Granule-pits well demarcated, generally lacking on the adradial margin of the external face. Abactinal plates small, without distinct space for papulae. Few rows of abactinal extanding up the the arm tip. Pedicellaria-pits elongate, numerous, expecially on the abradial side of the inferomarginal plates, the actinals and the adambulacrals.