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Metopaster dividuus

Asteroidea - Valvatida - Goniasteridae

Taxonomy
Metopaster dividuus was named by Rasmussen (1945). It is not extant. Its type specimen is Paleontological Department of the Mineralogical and Geological Museum at Copenha.

It was recombined as Ceramaster dividuus by Rasmussen (1950), Spencer and Wright (1966) and Rasmussen (1979).

Sister species lacking formal opinion data

View classification of included taxa

Synonymy list
YearName and author
1945Metopaster dividuus Rasmussen pp. 419-420 figs. pl. 9, fig. 3-6
1950Ceramaster dividuus Rasmussen pp. 53-54 figs. pl. 5, fig. 17
1966Ceramaster dividuus Spencer and Wright p. U57 figs. fig. 53.1
1979Ceramaster dividuus Rasmussen p. 70

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

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
H. W. Rasmussen 1950A Ceramaster with a pentagonal outline, and nearly straight sides. The margin is formed of just as many superomarginals as inferomarginals. The marginals are provided with a depressed border bearing line, closely placed setae, and within this, scattered setae attached in spine-pits. In the outermost part of the arm, the superomarginals meet in the mid line. This produces an ossicle which seen from the abactinal side has a characteristic pentagonal outline.