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Didymograptellus bifidus

Pterobranchia - Graptoloidea - Pterograptidae

Taxonomy
Graptolithus bifidus was named by Hall (1865). It is a 3D body fossil. Its type locality is Point Levis, which is in a Cassinian marine limestone in Canada.

It was recombined as Didymograptus bifidus by Berry (1962); it was recombined as Didymograptus (Didymograptellus) bifidus by Cooper and Fortey (1982); it was recombined as Didymograptellus bifidus by Vento et al. (2015).

Synonymy list
YearName and author
1865Graptolithus bifidus Hall pp. 73-74 figs. pl. I, figs. 16-18 (not pl. III, figs. 9
1962Didymograptus bifidus Berry pp. 294 - 298 figs. 1a-d, 2a
1982Didymograptus (Didymograptellus) bifidus Cooper and Fortey pp. 220 - 225 figs. Figs 34a-g, 35f; PI. 5, figs 11, 12
2015Didymograptellus bifidus Vento et al.

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
phylumHemichordataBateson 1885
classPterobranchiaLankester 1877
RankNameAuthor
subclassGraptolithina(Bronn 1849)
orderGraptoloideaLapworth 1875
suborderDichograptinaLapworth 1873
familyPterograptidaeMu 1950
genusDidymograptellus()
speciesbifidus()

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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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 et al. 2004, Aberhan 1992

Age range: base of the Floian to the top of the Kunda or 477.10000 to 464.30000 Ma

Collections (11 total)


Time interval Ma Country or state Original ID and collection number
Floian477.1 - 471.3Argentina (Jujuy) Didymograptellus bifidus (238719)
Arenig477.1 - 468.0Canada (Yukon) Didymograptus bifidus (204034)
Middle Ordovician - Late/Upper Ordovician471.3 - 443.1Russian Federation (Nenets) Didymograptus bifidus (46939)
Kunda469.1 - 464.3Russian Federation (Novgorod Oblast) Didymograptus bifidus (235857)
Kunda - Aseri469.1 - 461.4Russian Federation (Kostroma oblast) Didymograptus bifidus (235820)
Early/Lower Llanvirn468.0 - 461.1Argentina Didymograptus bifidus (8877)
Llanvirn468.0 - 458.2Spain Didymograptus bifidus (230078 230081 230082 230083 230084)