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Arachnoidinae

Echinoidea - Clypeasteroida - Clypeasteridae

Taxonomy
Arachnoidinae was named by Duncan (1889). It is extant.

It was reranked as the family Arachnoididae by Clark (1914), Durham (1955), Durham (1966).

It was assigned to Clypeasteroida by Clark (1914); to Clypeasterina by Durham (1955), Durham (1966); and to Clypeasteridae by Kroh and Smith (2010).

Synonymy list
YearName and author
1889Arachnoidinae Duncan p. 158
1914Arachnoididae Clark p. 43
1955Arachnoididae Durham p. 122
1966Arachnoididae Durham p. U464
2010Arachnoidinae Kroh and Smith p. 172

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
phylumEchinodermata
subphylumEleutherozoa
—Echinozoa()
classEchinoidea()
subclassEuechinoideaBronn 1860
RankNameAuthor
superorderAcroechinoidea()
—Carinacea
—Irregularia()
—Microstomata
—Neognathostomata
orderClypeasteroida
suborderClypeasterina()
familyClypeasteridae()
subfamilyArachnoidinae
subfamilyArachnoidinae

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.

Subfm. Arachnoidinae Duncan 1889
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G. Arachnoides Leske 1778
G. Fellaster Durham 1955
G. †Fossulaster Lambert and Thiéry 1925
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†Fossulaster halli Lambert and Thiery 1925
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: high Mg calcitec
Ontogeny: accretion, addition of partsp
Environment: marinep
Locomotion: slow-movingo
Life habit: semi-infaunalo
Diet: detritivoreo
Vision: limitedc
Dispersal: waterp
Dispersal 2: planktonicp
Created: 2004-02-28 18:19:59
Modified: 2009-10-08 15:05:22
Source: o = order, c = class, p = phylum
References: Kiessling 2004, Aberhan 1992, Aberhan et al. 2004

Age range

Maximum range based only on fossils: base of the Early/Lower Pliocene to the top of the Middle Pleistocene or 5.33300 to 0.12900 Ma
Minimum age of oldest fossil (stem group age): 3.6 Ma

Collections (3 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Pliocene5.333 - 3.6New Zealand (Auckland) Arachnoides sp. (45258 45259)
Middle Pleistocene0.774 - 0.129New Zealand (Wellington) Fellaster zelandiae (94818)