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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

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
Ambulacraria
phylumEchinodermata
subphylumEleutherozoa
RankNameAuthor
Asterozoa()
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.

G. †Hallaster Stürtz 1886
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Hallaster cylindricus Billings 1857
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Invalid names: Protaster forbesi Hall 1860 [synonym]
Invalid names: Taeniura Gregory 1897 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: high Mg calcitec
Ontogeny: accretion, addition of partsp
Environment: marinec
Locomotion: slow-movingc
Life habit: low-level epifaunalc
Diet: detritivorec
Diet 2: suspension feederc
Vision: blindc
Dispersal: waterp
Dispersal 2: planktonicp
Created: 2004-02-29 11:30:09
Modified: 2010-02-12 01:58:57
Source: c = class, p = phylum
References: Aberhan et al. 2004, Aberhan 1992

Age range: Katian or 453.00000 to 445.20000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Katian453.0 - 445.2Canada (Ontario) Palaeocoma cylindrica (180117)