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Crateraster

Asteroidea - Valvatida - Goniasteridae

Synonyms
Synonymy list
YearName and author
1913Crateraster Spencer
1928Austinaster Adkins p. 266
1966Crateraster Spencer and Wright p. U61
1998Crateraster Blake and Reid p. 515
2002Crateraster Sepkoski, Jr.

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

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
W.S. Adkins 1928 (Austinaster)Outline stellate-pentagonal, interradial arc moderatelly deep. Form depressed, disk thin over center, thickened at marginalia. Infero- and superomarginalia set at angle to each other, the inferior ones projecting, reducing gradually in size toward tip of ray. Both marginalia tuberculate tubercules of medium size and somewhat irregularly distributed. Marginalia devoid of ridge, grooves or other irregularities, and margins not depressed. Actinal interradial plates triangular, large. Abactinal plates small, hexagonal.