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Valettaster argus

Asteroidea - Valvatida - Sphaerasteridae

Taxonomy
Stauranderaster argus was named by Spencer (1907). It is not extant. Its type specimen is Holotype BNHM E 5019, Paratypes BNHM E 2566, BNHM E 20294.

It was recombined as Tholaster argus by Spencer (1913) and Umbgrove (1925); it was recombined as Valettaster argus by Valette (1915), Mercier (1935), Mercier (1936), Breton (1985), Breton (1986), Néraudeau and Breton (1993), Lewis (1993) and Gale (2021).

Sister species lacking formal opinion data
V. oculatus

Synonymy list
YearName and author
1907Stauranderaster argus Spencer pp. 99-100 figs. pl. 25, fig. 6; pl. 29, fig. 8-9
1913Tholaster argus Spencer pp. 137-138 figs. pl. 13, fig. 22-23
1915Valettaster argus Valette pp. 59-61 figs. fig. 20
1925Tholaster argus Umbgrove p. 211 figs. fig. 29-30
1935Valettaster argus Mercier pp. 39-40 figs. pl. 2, fig. 9a-e
1936Valettaster argus Mercier p. 25
1985Valettaster argus Breton pp. 93-99 figs. fig. 7
1986Valettaster argus Breton p. 29
1993Valettaster argus Lewis p. 67
1993Valettaster argus Néraudeau and Breton p. 117
2021Valettaster argus Gale p. 733 figs. Figs 6H–K, N, O, 7P, R, 8K, M, 22L, 23B–P

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

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.

†Valettaster argus Spencer 1907
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Diagnosis
ReferenceDiagnosis
G. Breton 1985Ossicles with a dome-shaped upper side, without radial structures as in V. ocellatus. Adambulacrals with 4 rows of spine bases parallel to the furrow. The adradial row is the more conspicuous and bears 5 stout tubercles for the articulation of spines.
A.S. Gale 2021Valettaster in which the abactinal ossicles possess small external faces and bear a reticulate sculpture.
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 et al. 2004, Aberhan 1992

Age range: base of the Turonian to the top of the Danian or 93.90000 to 61.60000 Ma

Collections (10 total)


Time interval Ma Country or state Original ID and collection number
Late/Upper Cenomanian99.6 - 93.5France Valettaster argus (59585 59799)
Turonian93.9 - 89.8France Valettaster argus (59638)
Coniacian89.8 - 86.3France Valettaster argus (72287)
Late/Upper Coniacian - Early/Lower Santonian89.3 - 83.5France Valettaster argus (59569 59659 59675)
Late/Upper Santonian85.8 - 83.5France Valettaster argus (59677)
Middle Santonian - Late/Upper Santonian85.8 - 83.5France Valettaster argus (59652)
Danian66.0 - 61.6Denmark Tholaster argus (89866)