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Ravniaster granulatus

Asteroidea - Valvatida - Goniasteridae

Taxonomy
Ravniaster granulatus 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 granulatus by Rasmussen (1950) and Rasmussen (1979).

Synonymy list
YearName and author
1945Ravniaster granulatus Rasmussen p. 422 figs. pl. 9, fig. 9
1950Ceramaster granulatus Rasmussen pp. 54-55 figs. pl. 5, fig. 18, 19
1979Ceramaster granulatus Rasmussen p. 70

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

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 equal numbers of superomarginals and inferomarginals. In the outermost part of the arm the marginals of the two sides meet in the mid line, producing an ossicle whose outline seen from the dorsal side is characteristically pentagonal. The free surface of the ossicles is evenly tumid, without an abactinal swelling; it is privided with a depressed border within which spine-pits and a marked granulation are found.