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Metopaster

Asteroidea - Valvatida - Goniasteridae

Taxonomy
Metopaster was named by Sladen (1893) [Sepkoski's age data: K Ceno-l K Maes-u]. It is not extant. Its type is Goniaster (Goniodiscus) parkinsoni.

It was assigned to Goniasterinae by Spencer and Wright (1966); to Valvatida by Sepkoski (2002); and to Goniasteridae by Sladen (1893), Breton (1992) and Breton and Néraudeau (2008).

Species lacking formal opinion data

View classification of included taxa

Synonyms
Synonymy list
YearName and author
1893Metopaster Sladen
1893Mitraster Sladen
1914Spenceria Fourtau p. 99
1935Dictydaster Mercier
1943Ravniaster Brünnich-Nielsen
1966Metopaster Spencer and Wright p. U57
1966Spenceria Spencer and Wright p. U57
1992Metopaster Breton p. 105
2002Metopaster Sepkoski, Jr.
2002Spenceria Sepkoski, Jr.
2008Metopaster Breton and Néraudeau p. 329

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

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 1992Body pentagonal, depressed, with sides concave, straight or slightly convex. Few, large marginal plates: 4 to 12 superomarginals per side. Enlarged ultimate or penultimate superomarginal plates at the arm tip, correponding to 1 to 11 inferomarginal plates. Width of the inferomarginal regularly decreases from interradius to the arm tip. External face with a raised central area and a depressed margin differentiated. Central area smooth or with an ornament of large, rounded, well demarcated granule-pits. Depressed margin with one or several rows of tiny, dense, adjoining granule-pits. Pedicellariae-pits oval, winged. 4 to 8 furow spines per adambulacral plate.