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Coronocystis angulatus

Rhombifera - Cheirocrinidae

Taxonomy
Cheirocrinus angulatus was named by Wood (1909) [= 1849 Cyathocrinites sculpttrs Troost: 61 (nomen nudum)]. Its type specimen is USNM 39951 and is a 3D body fossil. It is the type species of Coronocystis.

It was recombined as Coronocystis angulatus by Paul (1972).

Synonymy list
YearName and author
1909Cheirocrinus angulatus Wood p. 7 figs. pl. 8 f. 9-10
1972Coronocystis angulatus Paul pp. 40 - 45 figs. Plate 2, figs. 1-7, Plate 3, figs. 1-5, Text-figs. 3f, 4f, 11-13

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
phylumEchinodermata
RankNameAuthor
subphylumBlastozoa
orderRhombiferaZittel 1879
superfamilyGlyptocystitoida(Bather 1899)
familyCheirocrinidaeJaekel 1899
genusCoronocystisPaul 1972
speciesangulatus(Wood 1909)

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.

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Diagnosis
ReferenceDiagnosis
C. R. C. Paul 1972Aspecies of Cheirocrinidae with open lateral circlet, six radial plates; long ambulacra extending from dome-shaped oral surface down into enlarged radial plates, five of which are deeply cleft to receive the ambulacra; with 15 disjunct pectinirhombs.
Measurements
No measurements are available
Composition: high Mg calcitep
Ontogeny: accretion, addition of partsp
Environment: marinep
Locomotion: stationaryo
Attached: yeso
Life habit: intermediate-level epifaunalo
Diet: suspension feedero
Vision: blindo
Dispersal: waterp
Dispersal 2: planktonicp
Created: 2004-02-29 11:36:13
Modified: 2010-02-15 06:45:28
Source: o = order, p = phylum
References: Aberhan 1992, Aberhan et al. 2004

Age range: base of the Middle Ordovician to the top of the Caradoc or 471.30000 to 449.50000 Ma

Collections (9 total)


Time interval Ma Country or state Original ID and collection number
Middle Ordovician471.3 - 458.2USA (Kentucky) Coronocystis angulatus (124619)
Caradoc458.2 - 449.5USA (Virginia) Cheirocrinus angulatus (34224 34235 34237 34241 34243 34244 34245 34246)