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Metopaster trichilae

Asteroidea - Valvatida - Goniasteridae

Taxonomy
Metopaster trichilae was named by Breton (1992) [Include two subspecies Metopaster trichilae minor and Metopaster trichilae trichilae]. Its type specimen is Muséum d'Histoire Naturelle of Le Havre, MHNH 8415-8425 (Marginal plates) and is not a trace fossil. It was considered paraphyletic by Breton (1992).

Subspecies
M. minor, M. trichilae (type subspecies)
Sister species lacking formal opinion data
M. exsculptus, M. granulatus, M. lisannae, M. miriamae, M. tennesseensis

Synonymy list
YearName and author
1992Metopaster trichilae Breton pp. 161-170 figs. pl. 14, 15

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

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.

†Metopaster trichilae Breton 1992
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Diagnosis
ReferenceDiagnosis
G. Breton 1992Enlarged ultimate superomarginal plates large, tall, elongated and relatively narrow, typically in contact with five inferomarginals. Abactinal bulge highly developed. Superomarginals tumid and inferomarginals high. Central area with a well-defined narrow depressed margin. Plates of large size, smoothed or rarely with few granule-pits in abradial side. Enlarged ultimate superomarginal plates of with indentation in abactino-distal position, which can modify outline of the adradial surface of articulation with the neighboring plate.
Measurements
No measurements are available
Composition: high Mg calcitef
Ontogeny: accretion, addition of partsp
Environment: marinef
Locomotion: actively mobilef
Life habit: epifaunalf
Diet: detritivoref
Vision: limitedc
Dispersal: waterf
Dispersal 2: planktonicf
Created: 2007-10-02 04:01:50
Modified: 2007-10-02 06:05:14
Source: f = family, c = class, p = phylum
References: Aberhan et al. 2004, Blake 1990, Aberhan 1992

Age range: Late/Upper Santonian or 85.70000 to 83.60000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Late/Upper Santonian85.7 - 83.6France Metopaster trichilae (59677)