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Sigmagraptinae

Pterobranchia - Graptoloidea - Sinograptidae

Taxonomy
Sigmagraptinae was named by Cooper and Fortey (1982). It is not extant.

It was assigned to Dichograptidae by Toro (1993); to Graptoloidea by Toro (1997); and to Sinograptidae by Vento et al. (2012).

Synonymy list
YearName and author
1982Sigmagraptinae Cooper and Fortey
1993Sigmagraptinae Toro p. 74
1997Sigmagraptinae Toro
2012Sigmagraptinae Vento et al. p. 353

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
phylumHemichordataBateson 1885
classPterobranchiaLankester 1877
RankNameAuthor
subclassGraptolithina(Bronn 1849)
orderGraptoloideaLapworth 1875
suborderSinograptaMaletz 2009
familySinograptidaeMu 1957
subfamilySigmagraptinaeCooper and Fortey 1982
subfamilySigmagraptinaeCooper and Fortey 1982

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.

Subfm. †Sigmagraptinae Cooper and Fortey 1982
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†Acrograptus gracilis Törnquist 1891
G. †Trichograptus Nicholson 1876
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†Trichograptus dilaceratus Herrmann 1885
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: "sclero-protein"c
Locomotion: passively mobileo
Life habit: planktonico
Diet: suspension feedero
Vision: blindc
Created: 2004-02-28 15:07:12
Modified: 2009-05-19 07:15:15
Source: o = order, c = class
References: Aberhan 1992, Aberhan et al. 2004

Age range: base of the Floian to the top of the Early/Lower Llanvirn or 477.10000 to 461.10000 Ma

Collections (23 total)


Time interval Ma Country or state Original ID and collection number
Early/Lower Ordovician486.85 - 471.3Argentina (Jujuy) Acrograptus gracilis (238721)
Lancefieldian - Bendigonian484.3 - 473.1Australia (Tasmania) Didymograptus gracilis (211106)
Floian477.1 - 471.3Russian Federation (Siberia) Acrograptus cognatus, Acrograptus sp. (205381) Acrograptus pusillus, Acrograptus balticus (205382)
Floian477.1 - 471.3Argentina (Catamarca) Sigmagraptinae indet. (145599 145600)
Floian477.1 - 471.3Argentina (Jujuy) Trichograptus dilaceratus, Acrograptus gracilis (214961 220286)
Arenig477.1 - 468.0Canada (Yukon) Acrograptus gracilis (204034)
Arenig477.1 - 468.0Argentina Acrograptus sp. (8777 8869)
Arenig477.1 - 468.0United Kingdom (England) Acrograptus sp. (3706)
Chewtonian - Castlemainian473.1 - 470.3USA (Idaho) Didymograptus gracilis (145223)
Dapingian471.3 - 469.4Russian Federation (Siberia) Acrograptus cognatus (206146 206147) Acrograptus nicholsoni (205387) Acrograptus sp. (205380 205563)
Darriwilian469.4 - 458.2Russian Federation (Siberia) Acrograptus sp. (205379 206161)
Early/Lower Llanvirn468.0 - 461.1United Kingdom (England) Acrograptus sp. (3707)
Oretanian468.0 - 461.0Spain (Toledo) Acrograptus sp. (20898)
Oretanian468.0 - 461.0Spain (Salamanca) Acrograptus affinis (21092)