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Rhagasostoma

Gymnolaemata - Cheilostomata - Onychocellidae

Synonymy list
YearName and author
1953Rhagasostoma Bassler p. G174
2002Rhagasostoma Sepkoski
2018Rhagasostoma Koromyslova et al. p. 7
2020Rhagasostoma Koromyslova and Seltser p. 707

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
Lophophorata
RankNameAuthor
phylumBryozoaEhrenberg 1831
classGymnolaemataAllman 1856
orderCheilostomataBusk 1859
suborderFlustrina(Smitt 1868)
superfamilyMicroporoideaGray 1848
familyOnychocellidaeJullien 1882
genusRhagasostoma

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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Rhagasostoma angliae Brydone 1936
Rhagasostoma aralense Koromyslova et al. 2018
Rhagasostoma brydonei Koromyslova et al. 2018
Rhagasostoma gibbosulum Brydone 1936
Rhagasostoma gibbosum Marsson 1887
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Invalid names: Rhagasostoma subgibbosum Brydone 1930 [synonym]
Rhagasostoma inelegans Lonsdale 1850
Rhagasostoma mimosa Brydone 1930
Rhagasostoma minuens Brydone 1936
Rhagasostoma operculatum Koromyslova et al. 2018
Rhagasostoma rowei Brydone 1906
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Invalid names: Eschara volgensis Eichwald 1865 [synonym]
Rhagasostoma saltans Brydone 1930
Rhagasostoma tchvanovi Favorskaya 1992
Invalid names: Rhagasostoma gibbosum weybournensis Brydone 1930 [synonym]
Diagnosis
ReferenceDiagnosis
A. V. Koromyslova et al. 2018Colony encrusting or erect, vincularian and dichotomously branching. Autozooids subhexagonal; zooidal boundaries raised. Cryptocyst extensive, granular, sometimes peripheral caverns present. Gymnocyst lacking or minutely present. Opesia terminal or subterminal, occupying about one-third of the frontal surface, longitudinally elliptical, with deep opesiular indentations at the proximolateral corners, sometimes with occlusor lamina. Ovicells endozooidal or immersed. Avicularia vicarious and about the same size as autozooids, or interzooidal; opesia roundish or longitudinally elliptical, located centrally, usually with thin articular ridges bearing two short teeth proximally and a short or long, slit-like opesiular indentation between the teeth; sometimes wedge-like structures present. Kenozooids rounded or oval bifoliated and located at edges of colonies with opesia roundish, small.