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Rhopalocystis fraga

Eocrinoidea - Ascocystitida - Rhopalocystidae

Taxonomy
Rhopalocystis fraga was named by Chauvel (1971) [= 1971 Rhopalocystis sp.; Chauvel, p. 44, pl. 1 figs. 9, 10. = 1978 Rhopalocystis sp. A; Chauvel, p. 54. = 1978 Rhopalocystis sp. B; Chauvel, p. 54, text-fig. 11q. = 1986 Rhopalocystis sp. A; Chauvel and Régnault, p. 870. = 1986 Rhopalocystis sp. B; Chauvel and Régnault, p. 870.].

Synonymy list
YearName and author
1971Rhopalocystis fraga Chauvel p. 43 figs. pl. 1, figs. 7, 8; pl. 2, fig. 3
2017Rhopalocystis fraga Allaire et al. p. 701 figs. 5.13, 9.1–9.4, 10.2, 10.4

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
Ambulacraria
phylumEchinodermata
RankNameAuthor
subphylumBlastozoa
classEocrinoideaJaekel 1918
orderAscocystitida
familyRhopalocystidaeUbaghs 1967
genusRhopalocystisUbaghs 1963
speciesfraga

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.

Rhopalocystis fraga Chauvel 1971
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Diagnosis
ReferenceDiagnosis
N. Allaire et al. 2017Rhopalocystis with a small, stocky, strawberryshaped theca, composed of six circlets of plates, one basal plate, one circlet of infralaterals (four plates), one circlet of laterals (six plates), three circlets of radials (columns of three plates). Basal wider than high; thecal plates convex, with facultative small ornamentation folds (granulations).
Measurements
No measurements are available
Composition: high Mg calcitep
Ontogeny: accretion, addition of partsp
Environment: marinep
Locomotion: stationaryg
Attached: yesg
Life habit: intermediate-level epifaunalg
Diet: suspension feederg
Vision: blindc
Dispersal: waterp
Dispersal 2: planktonicp
Created: 2009-10-08 09:49:00
Modified: 2009-10-08 11:49:00
Source: g = genus, c = class, p = phylum
References: Hendy et al. 2009, Aberhan et al. 2004, Aberhan 1992

Age range: Tremadocian or 486.85000 to 477.10000 Ma

Collections (3 total)


Time interval Ma Country or state Original ID and collection number
Tremadocian486.85 - 477.1Morocco (Zagora) Rhopalocystis fraga (182907 197256 197257)