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Comptonia

Asteroidea - Valvatida - Goniasteridae

Taxonomy
Comptonia was named by Gray (1840) [Sepkoski's age data: K Apti K Ceno-u]. It is not extant. Its type is Comptonia elegans.

It was assigned to Goniasteridae by Forbes (1841), Spencer and Wright (1966) and Breton (1992); and to Valvatida by Sepkoski (2002).

Synonymy list
YearName and author
1840Comptonia Gray
1841Comptonia Forbes
1966Comptonia Spencer and Wright p. U59
1992Comptonia Breton p. 309
2002Comptonia Sepkoski, Jr.

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

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 and slender arms. Radius at least 3 time longer than the interradius. Interbrachial arc parabolic. Marginal plates squarish. One row of carinal plates inserted between the superomarginal rows and joining the arm tip. External face of the marginal plates convex, slightly domed to saddle-shaped. Ornament of tiny, dense granule-pits, occasionally associated with tiny and evenly spaced tubercles. Pedicellariae unknown.