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Coronocystis durandensis

Rhombifera - Cheirocrinidae

Taxonomy
Coronocystis durandensis was named by Kolata (1975). Its type specimen is BMNH PK-82 and is a 3D body fossil. Its type locality is quarry of the Medusa Portland Cement, Rock River, Dixon, Lee County, which is in a Blackriveran carbonate limestone in the Grand Detour Formation of illinois.

Synonymy list
YearName and author
1975Coronocystis durandensis Kolata pp. 16 - 17 figs. pl. 1, fig. 7; P1. 2, figs. 1-15

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
Ambulacraria
phylumEchinodermata
RankNameAuthor
subphylumBlastozoa
orderRhombiferaZittel 1879
superfamilyGlyptocystitoida(Bather 1899)
familyCheirocrinidaeJaekel 1899
genusCoronocystisPaul 1972
speciesdurandensis

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.

Coronocystis durandensis Kolata 1975
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Diagnosis
ReferenceDiagnosis
D. R. Kolata 1975A species of Coronocystis with a large theca, very prominent sharp axial ridges, few accessory ridges, a large periproct, and lacking demirhombs on IL4/L4, B1/B2 and B2/B3.