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Peiragraptinae

Pterobranchia - Graptoloidea - Diplograptidae

Taxonomy
Peiragraptinae was named by Jaanusson (1960). It is not extant.

It was assigned to Orthograptidae by Mitchell (1987).

Subtaxa

Synonymy list
YearName and author
1960Peiragraptinae Jaanusson
1987Peiragraptinae Mitchell p. 381

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
Ambulacraria
phylumHemichordataBateson 1885
classPterobranchiaLankester 1877
RankNameAuthor
subclassGraptolithina(Bronn 1849)
orderGraptoloideaLapworth 1875
suborderAxonophoraFrech 1897
infraorderDiplograptina(Lapworth 1880)
familyDiplograptidae
subfamilyPeiragraptinaeJaanusson 1960
subfamilyPeiragraptinaeJaanusson 1960

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. †Peiragraptinae Jaanusson 1960
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G. †Geniculograptus Mitchell 1987
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Geniculograptus pygmaeus Ruedemann 1925
Diagnosis
ReferenceDiagnosis
C. E. Mitchell 1987Orthograptids with Pattern G or Pattern F primordial astogeny; strongly geniculate
thecae bearing genicular spines or flanges or both; rhabdosome generally aseptate and with fully sclerotized periderm.
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 et al. 2004, Aberhan 1992

Age range: base of the Edenian to the top of the Maysvillian or 451.00000 to 449.60000 Ma

Collections (8 total)


Time interval Ma Country or state Original ID and collection number
Actonian - Onnian454.0 - 449.5Argentina Geniculograptus sp. (8887)
Katian452.8 - 445.2USA (New York) Geniculograptus pygmaeus (204767)
Edenian451.0 - 450.2USA (Kentucky) Geniculograptus sp. (48779 48781) Geniculograptus typicalis (87844)
Edenian - Maysvillian451.0 - 449.6USA (Michigan) Climacograptus pygmaeus (26337 26338)
Maysvillian450.2 - 449.6USA (Michigan) Climacograptus pygmaeus (145605)