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Sigmoidella

Nodosariata - Polymorphinida - Polymorphinidae

Taxonomy
Sigmoidella was named by Cushman and Ozawa (1928) [Sepkoski's age data: T Eo-m R]. It is extant. It was considered unknown by Cushman and Ozawa (1928).

It was assigned to Polymorphininae by Cushman and Ozawa (1928); and to Foraminiferida by Sepkoski (2002).

Species
S. lisbonensis
Species lacking formal opinion data
S. elegantissima, S. elegantissima, S. taisanensis

Synonymy list
YearName and author
1928Sigmoidella Cushman and Ozawa
2002Sigmoidella Sepkoski

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RankNameAuthor
kingdomChromistaCavalier-Smith 1981
subkingdomRhizaria()
phylumForaminifera(Eichwald 1830)
classNodosariata
RankNameAuthor
orderPolymorphinida
familyPolymorphinidaed'Orbigny 1839
subfamilyPolymorphininae
genusSigmoidella

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. Sigmoidella Cushman and Ozawa 1928
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Diagnosis
ReferenceDiagnosis
J. A. Cushman and Y. Ozawa 1928Test ovate to elliptical in side view, compressed; chambers
elongate, angular, regularly arranged in open sigmoid series,
gradually increasing in length in the later ones which include
the earlier ones, but often the adult chambers not reaching the
base; sutures distinct. Having much compressed chambers arranged in planes more than 180° from one another similar to Sigmoilina in the Miliolidae.
Measurements
No measurements are available
Locomotion: stationaryo
Life habit: semi-infaunalo
Diet: omnivoreo
Created: 2007-11-28 00:47:02
Modified: 2009-05-20 05:31:44
Source: o = order
Reference: Kiessling 2004

Age range: base of the NN11 to the top of the Holocene or 8.25000 to 0.00000 Ma

Collections (39 total)


Time interval Ma Country or state Original ID and collection number
Miocene23.04 - 5.333Indian Ocean S. elegantissima (246872 250348)
NN118.25 - 5.6Indian Ocean S. spp. (259166 259167 259169)
NN11 - NN128.25 - 5.0Indian Ocean S. elegantissima (249561)
NN12 - NN135.6 - 4.0Indian Ocean S. spp. (259161) S. spp., S. elegantissima (249560)
Early/Lower Pliocene5.333 - 3.6New Zealand S. elegantissima (73307)
Zanclean5.333 - 3.6Taiwan (Hsinchu-Hsien) S. taisanensis (13488)
Pliocene5.333 - 2.58Indian Ocean S. elegantissima (250338) S. spp. (252654 252658)
NN13 - NN145.0 - 3.75Indian Ocean S. spp. (259160)
NN14 - NN154.0 - 3.75Indian Ocean S. spp. (249559 259158 259159)
NN15 - NN164.0 - 2.5Indian Ocean S. elegantissima (259156) S. spp. (254660 254661)
NN163.75 - 2.5Indian Ocean S. spp. (249558 254659 259154 259155)
NN16 - NN173.75 - 2.4Indian Ocean S. spp. (249557)
D. altispira HOZ - Atlantic3.16 - 3.13Indian Ocean S. spp. (260076)
Pleistocene2.58 - 0.0117Indian Ocean S. elegantissima (250331) S. spp. (250307 251535 251536)
NN172.5 - 2.4Indian Ocean S. spp. (249556)
NN191.9 - 0.42Indian Ocean S. spp. (249089 249552 257263)
G. tosaensis HOSZ1.88 - 0.61Indian Ocean S. spp. (251299 260065)
G. truncatulinoides PRSZ0.61 - 0.0Indian Ocean S. spp. (260060)
NN200.42 - 0.29Indian Ocean S. elegantissima (259149)
Holocene0.0117 - 0.0Indian Ocean S. spp. (251534)