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Hexuraster

Ophiuroidea - Cheiropterasteridae

Taxonomy
Hexuraster was named by Jell and Theron (1999). It is not extant. Its type is Hexura weitzi.

It was assigned to Cheiropterasteridae by Jell and Theron (1999).

Synonyms
Synonymy list
YearName and author
1950Hexura Spencer
1999Hexuraster Jell and Theron p. 162

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
Ambulacraria
RankNameAuthor
phylumEchinodermata
subphylumAsterozoa
classOphiuroidea
familyCheiropterasteridae
genusHexuraster

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
P. A. Jell and J. N. Theron 1999Body large; disc uncalcified, extending to arm tips. Arms slightly petaloid. Ambulacrals cylindrical with lateral projection (or toe of boot) shorter than radial length. Adambulacrals wide (ad-ab), expanded abradially to be T-shaped, with single very strong lateral spine on each adambulacral. Madreporite interradial, close to mouth frame on ventral surface. Mouth frame small for size of animal, plates not massive, with well-developed podial basin on 2nd ambulacral. Mouth large, with short buccal slit between 1st 2 ambulacrals.