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Hemicystites

Edrioasteroidea - Hemicystitidae

Taxonomy
Hemicystites was named by Hall (1852) [Sepkoski's age data: S Wenl-l Sepkoski's reference number: 318]. It is not extant.

It was assigned to Hemicystitidae by Regnéll (1966); and to Isorophida by Sepkoski (2002).

Synonymy list
YearName and author
1852Hemicystites Hall
1966Hemicystites Regnéll
2002Hemicystites Sepkoski

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
RankNameAuthor
phylumEchinodermata
classEdrioasteroideaBillings 1858
familyHemicystitidaeBassler 1936
genusHemicystitesHall 1852

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. †Hemicystites Hall 1852
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: high Mg calcitep
Ontogeny: accretion, addition of partsp
Environment: marinep
Locomotion: stationaryc
Attached: yesc
Epibiont: yesc
Life habit: low-level epifaunalc
Diet: suspension feederc
Vision: limitedc
Dispersal: waterp
Dispersal 2: planktonicp
Created: 2004-02-29 10:42:45
Modified: 2010-02-16 01:51:32
Source: c = class, p = phylum
References: Aberhan 1992, Aberhan et al. 2004

Age range: base of the Arenig to the top of the Wenlock or 478.60000 to 427.40000 Ma

Collections (23 total)


Time interval Ma Country or state Original ID and collection number
Arenig478.6 - 466.0Morocco H. sp. (20979)
Letna - Harnagian460.9 - 457.2Czech Republic H. bohemicus, H. velatus (3861)
Dobrotivian459.0 - 457.9Czech Republic H. sp. (3859)
Sandbian458.4 - 453.0Czech Republic H. sp. (3856)
Berounian457.9 - 449.8Morocco H. sp. (21001)
Zahorany - Late/Upper Ordovician457.5 - 443.8Czech Republic H. sp. (3865)
Blackriveran457.3 - 449.6USA (Illinois, Iowa) H. paulianus (23449)
Blackriveran - Rocklandian457.3 - 449.6USA (Illinois, Iowa) H. curtus, H. paulianus (23454)
Kirkfieldian457.3 - 449.6USA (Illinois, Iowa) H. curtus, H. paulianus (23460) H. paulianus (23465)
Rocklandian - Kirkfieldian457.3 - 449.6USA (Illinois, Iowa) H. curtus, H. paulianus (23457)
Rocklandian - Shermanian457.3 - 449.6USA (Minnesota) H. curtus, H. paulianus (23402)
Shermanian457.3 - 449.6USA (Minnesota) H. paulianus (23403)
Shermanian457.3 - 449.6USA (Illinois, Iowa) H. paulianus (23470)
Shermanian457.3 - 449.6USA (Iowa, Illinois) H. paulianus (23469)
Chatfieldian453.8 - 451.0Canada (Ontario) H. billingsi (26263)
Katian453.0 - 445.2USA (Iowa) H. sp. (138446)
Richmondian - Ashgill449.6 - 443.7USA (Ohio) H. sp. (392 393 394)
Wenlock433.4 - 427.4Canada (Ontario) H. sp. (26855)
Wenlock433.4 - 427.4USA (New York) H. parasiticus (12936) H. parasiticus, H. sp. (26854)