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Chomataster

Asteroidea - Valvatida - Goniasteridae

Taxonomy
Chomataster was named by Spencer (1913) [Sepkoski's age data: K Sant T Dani Sepkoski's reference number: 772]. It is not extant. Its type is Chomataster acules.

It was assigned to Valvatida by Sepkoski (2002); and to Goniasteridae by Spencer (1913), Spencer and Wright (1966) and Jagt et al. (2021).

Species

Synonymy list
YearName and author
1913Chomataster Spencer
1966Chomataster Spencer and Wright p. U59
2002Chomataster Sepkoski
2021Chomataster Jagt et al. p. 6

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Life
Deuterostomia
Ambulacraria
phylumEchinodermata
subphylumEleutherozoa
RankNameAuthor
Asterozoa()
classAsteroidea
subclassAmbuloasteroidea
infraclassNeoasteroidea()
superorderValvatacea
orderValvatida
familyGoniasteridae
genusChomataster

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.

G. †Chomataster Spencer 1913
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Chomataster acules Spencer 1913
Chomataster breizh Jagt et al. 2021
Chomataster tethysiensis Villier 2001
Diagnosis
ReferenceDiagnosis
J.W.M. Jagt et al. 2021Medium- to large-sized (R up to 115 mm; r up to 45 mm) goniasterid with tall marginal ossicles; median/interradial superomarginals tall, narrow, lateral face either vertical, inclined outwards or evenly rounded to aboral surface; either with single large crater-shaped spine pit at the summit of the lateral face of all SMs, or only on those of disc/arm transition and along arms; in one species, two spine pits on distal SMs; spherical spines on SMs; no enlarged, ‘angle’ SMs at arm base; SMs in arms alternating, not opposing at mid-radial line; IMs with broad, rounded oral surface, intermarginal facet narrow, either merely with close-set granule cover or 1‒5 large crater-shaped pits on oral face.