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Charlottea hotaoensis

Protozoa - Entactinaria - Eptingiidae

Discussion

Named by Carter.

Original description: Test with small cortical shell, triangular to subtriangular in outline and three medium-sized spines of equal length. Surface of cortical shell slightly convex with large subtriangular to irregularly shaped pore frames and deeply incised pores, sub-round in shape. Pore frame vertices usually with small to medium sized nodes; some groups of pore frames partly surrounded by massive raised ridges. Spines assymetrically arranged; two spines closer together than the third. Spines stout, triradiate and strongly tapering with narrow ridges and wide grooves.

Original remarks: Charlottea hotaoensis n. sp. differs from C. triquetra Whalen & Carter in having a strongly triangular rather than subtriangular shell and less convex shell surfaces. It is likely that C. hotaoensis n. sp. is derived from C. triquetra. In our material, C. triquetra ranges from upper Sinemurian to basal Pliensbachian; C. hotaoensis n. sp. does not range below the Pliensbachian. This new species may also represent the transition between the two eptingiid genera, Charlottea and Perispyridium.

Etymology: This species is named for the Haida village of Hotao on the southwest side of Maude Island, Queen Charlotte Islands, British Columbia.

Taxonomy
Charlottea hotaoensis was named by Gorican et al. (2006). Its type specimen is GSC 111713 and is a 3D body fossil. Its type locality is Maude Island, west of Ells Bay; GSC loc. C-304566, which is in a Pliensbachian marine limestone in the Fannin Formation of Canada.

Synonymy list
YearName and author
2006Charlottea hotaoensis Gorican et al. p. 104 figs. Pl. CHA09

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RankNameAuthor
Life
Eukaryota()
classProtozoaGoldfuss 1820
subphylumSarcodinaSchmarda 1871
classReticulareaLankester 1885
subclassRadiolaria(Müller 1858)
RankNameAuthor
superorderPolycystina(Ehrenberg 1838)
orderEntactinariaKozur and Mostler 1982
familyEptingiidaeDumitrica 1978
genusCharlottea
specieshotaoensis

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.

Charlottea hotaoensis Gorican et al. 2006
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: silicap
Environment: marinep
Locomotion: passively mobilep
Life habit: planktonicp
Diet: omnivorep
Created: 2005-01-28 01:13:47
Modified: 2005-01-28 03:13:47
Source: p = phylum
Reference: Kiessling 1999

Age range: base of the Late/Upper Pliensbachian to the top of the Early/Lower Toarcian or 189.60000 to 182.00000 Ma

Collections (17 total)


Time interval Ma Country or state Original ID and collection number
Late/Upper Sinemurian - Early/Lower Pliensbachian196.5 - 183.0Canada (British Columbia) Charlottea hotaoensis (119700)
Early/Lower Pliensbachian189.6 - 183.0Canada (British Columbia) Charlottea hotaoensis (119713 119714 119746 119748 type locality: 119767 119770 119771 119773 119774 119775 119788 119800 119808)
Late/Upper Pliensbachian189.6 - 183.0Canada (British Columbia) Charlottea hotaoensis (119711)
Early/Lower Toarcian183.0 - 182.0Japan Charlottea hotaoensis (51710 124830)