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Calliasterella

Asteroidea - Platyasterida - Calliasterellidae

Taxonomy
Calliasterella was named by Schuchert (1914) [Sepkoski's age data: C Mosc C Step-l Sepkoski's reference number: 1066]. It is the type genus of Calliasterellinae, Calliasteridae. It was considered monophyletic by Blake and Hagdorn (2003).

It was assigned to Cryptozonia by Schuchert (1914); to Calliasterellinae by Owen (1965) and Spencer and Wright (1966); to Uractinida by Sepkoski (2002); and to Calliasterellidae by Schuchert (1915), Kesling and Strimple (1966), Blake and Hagdorn (2003) and Blake and Elliott (2003).

Synonymy list
YearName and author
1914Calliasterella Schuchert p. 14
1915Calliasterella Schuchert pp. 190-191 figs. text-fig. 11, pl. 31 fig. 3
1965Calliasterella Owen p. 567
1966Calliasterella Kesling and Strimple p. 1160
1966Calliasterella Spencer and Wright p. U74
2002Calliasterella Sepkoski, Jr.
2003Calliasterella Blake and Elliott p. 488
2003Calliasterella Blake and Hagdorn p. 34

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
Ambulacraria
phylumEchinodermata
RankNameAuthor
subphylumAsterozoa
classAsteroidea
orderPlatyasterida
suborderUractinina()
familyCalliasterellidae()
genusCalliasterella

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 D. R. Elliott 2003Neopalaeasterid-like stem-group asteroid with primary circlet ossicles not significantly enlarged; ossicles rectangular, transversely elongate. ‘‘Extraneous’’ or ‘‘X’’ ossicles not
developed. Carinal series differentiated, ossicles rectangular, transversely elongate, separated longitudinally by gap approximately equal to length of ossicle. Marginal-series ossicles robust, arched, shield-like. Arm margin defined by marginals, adambulacrals in approximately continuous lateral curve. Adambulacrals with ventral-lateral spine fringe. Axillary edges exposed laterally. Enlarged pustule bases absent, small, uniform, discrete pustules present. No granular accessory debris recognized. Ventral surface not exposed in available material.