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Lyracystis

Eocrinoidea - Gogiida - Lyracystidae

Taxonomy

Species
L. radiata (type species), L. reesei

Synonymy list
YearName and author
2006Lyracystis Sprinkle and Collins

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
Ambulacraria
phylumEchinodermata
RankNameAuthor
subphylumBlastozoa
classEocrinoideaJaekel 1918
orderGogiidaBroadhead 1982
familyLyracystidae
genusLyracystis

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.

G. †Lyracystis Sprinkle and Collins 2006
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Lyracystis radiata Sprinkle and Collins 2006
Lyracystis reesei Sprinkle and Collins 2006
Diagnosis
ReferenceDiagnosis
J. Sprinkle and D. Collins 2006Large eocrinoids with globular to rounded conical theca having numerous, irregular, ridge- and epispire-bearing thecal plates; three large lyre-shaped arms with biserial-totriserial lateral trunks and numerous long straight brachioles in central V; and very long, thin, multiplated stalk for attachment with domed, ridged, or spiny small plates.
Measurements
No measurements are available
Composition: high Mg calcitep
Ontogeny: accretion, addition of partsp
Environment: marinep
Locomotion: stationaryc
Attached: yesc
Life habit: epifaunalc
Diet: suspension feederc
Vision: blindc
Dispersal: waterp
Dispersal 2: planktonicp
Created: 2004-02-29 10:44:55
Modified: 2010-02-11 00:40:17
Source: c = class, p = phylum
References: Aberhan et al. 2004, Aberhan 1992

Age range: base of the St Davids to the top of the Delamaran or 506.50000 to 505.30000 Ma

Collections (5 total)


Time interval Ma Country or state Original ID and collection number
Delamaran509.7 - 505.3Canada (British Columbia) L. radiata (84422 84425 84428)
Middle Cambrian506.5 - 497.0USA (Utah) L. reesei (80122)
St Davids506.5 - 497.0Canada (British Columbia) L. radiata (215)