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Chaetasteridae

Asteroidea - Valvatida - Chaetasteridae

Taxonomy
Chaetasteridae was named by Sladen (1889) [Named as "Chaetasterinae" and considered as a subfamily of Linckiidae (see Clark & Downey 1992)]. It is extant. It was considered monophyletic by Mah and Blake (2012), Gale (2020).

It was assigned to Granulosina by Spencer and Wright (1966); and to Valvatida by Blake (1987), Blake (1989), Mah and Blake (2012), Gale (2020).

Subtaxa
Arthraster

Synonymy list
YearName and author
1889Chaetasteridae Sladen p. 398
1966Chaetasteridae Spencer and Wright p. U56
1987Chaetasteridae Blake p. 520
1989Chaetasteridae Blake p. 213
2012Chaetasteridae Mah and Blake p. 3
2020Chaetasteridae Gale

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
phylumEchinodermata
subphylumEleutherozoa
—Asterozoa()
RankNameAuthor
classAsteroidea
subclassAmbuloasteroidea
infraclassNeoasteroidea()
superorderValvatacea
orderValvatida
familyChaetasteridae
familyChaetasteridae

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.

Fm. Chaetasteridae Sladen 1889
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G. †Arthraster Forbes 1848
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†Arthraster cristatus Spencer 1907
†Arthraster dixoni Forbes 1848
†Arthraster spenceri Mercier 1935
Diagnosis
ReferenceDiagnosis
A.S. Gale 2020Arms long, narrow, subcylindrical, disc small, interradii acutely angled. Arms constructed of 7 to 13 well defined rows of extraxial ossicles; abactinal, marginal and actinal ossicles of the arm of similar size, all carry raised central ridge. Abactinal ossicles of disc small, round to oval.
Measurements
No measurements are available
Composition: high Mg calcitec
Ontogeny: accretion, addition of partsp
Environment: marinep
Locomotion: slow-movingc
Life habit: low-level epifaunalc
Diet: carnivorec
Vision: limitedc
Dispersal: waterp
Dispersal 2: planktonicp
Created: 2004-02-28 15:35:10
Modified: 2010-02-09 06:02:08
Source: c = class, p = phylum
References: Aberhan 1992, Aberhan et al. 2004

Age range: base of the Late/Upper Bathonian to the top of the Late/Upper Santonian or 168.20000 to 83.60000 Ma

Collections (11 total)


Time interval Ma Country or state Original ID and collection number
Late/Upper Bathonian168.2 - 165.3France Arthraster spenceri (72284)
Early/Lower Cenomanian100.5 - 93.9France Arthraster cristatus (59613) Arthraster dixoni (59619)
Late/Upper Cenomanian100.5 - 93.9France Arthraster cristatus (59585)
Early/Lower Turonian93.9 - 89.8Czechia Arthraster cristatus (90516 90518)
Coniacian89.8 - 85.7France Arthraster sp. (59680)
Late/Upper Coniacian - Early/Lower Santonian89.8 - 83.6France Arthraster cristatus (59675) Arthraster dixoni (59612 59659)
Middle Santonian - Late/Upper Santonian85.7 - 83.6France Arthraster cristatus (59652)