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Betelgeusia

Asteroidea - Valvatida - Radiasteridae

Taxonomy
Betelgeusia was named by Blake and Reid (1998) [Sepkoski's age data: K Albi-m Sepkoski's reference number: 1265]. It is not extant.

It was assigned to Paxillosida by Sepkoski (2002); to Radiasteridae by Blake and Reid (1998), Blake and Jagt (2005) and Blake and Reboul (2011); and to Astropectinidae by Gale (2011).

Synonymy list
YearName and author
1998Betelgeusia Blake and Reid
2002Betelgeusia Sepkoski, Jr.
2005Betelgeusia Blake and Jagt p. 187
2011Betelgeusia Blake and Reboul p. 1026
2011Betelgeusia Gale p. 57

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
Ambulacraria
phylumEchinodermata
subphylumAsterozoa
classAsteroidea
RankNameAuthor
subclassAmbuloasteroidea
infraclassNeoasteroidea()
superorderValvatacea
orderValvatida
suborderGranulosina()
familyRadiasteridae
genusBetelgeusia

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
D. B. Blake and R. Reid 1998Radiasterid with relatively large, transversely elongate marginals; distal marginals particularly suggestive of those of Astropecten. Inferomarginals with well-developed lateral spine fringe. Actinals with elongate, slender, conical spines. Adambulacral furrow spines about 5; many elongate, slender spines on actinal surface. Madreporite large, near disk center, not partially covered by paxillae.