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Morphology Ecology and taphonomy   Age range and collections

Hallaster

Ophiuroidea - Oegophiurida - Lapworthuridae

Taxonomy
Hallaster was named by Stürtz (1886) [Sepkoski's age data: O Aren-u D Gedi-u Sepkoski's reference number: 2]. Its type is Palaeocoma cylindrica. It is the type genus of Hallasteridae.

It was assigned to Hallasteridae by Spencer (1925); to Lapworthuridae by Schuchert (1915), Owen (1965) and Spencer and Wright (1966); and to Oegophiurida by Sepkoski (2002).

Synonyms
Synonymy list
YearName and author
1886Hallaster Stürtz p. 150
1897Taeniura Gregory p. 1035
1915Hallaster Schuchert pp. 254-255
1925Hallaster Spencer pp. 291-293
1965Hallaster Owen p. 554
1966Hallaster Spencer and Wright p. U88
2002Hallaster Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
Life
Ambulacraria
phylumEchinodermata
RankNameAuthor
subphylumAsterozoa
classOphiuroidea
orderOegophiurida
suborderZeugophiurina()
familyLapworthuridae
genusHallaster

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
No diagnoses are available