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Didymograptus (Didymograptus) artus

Pterobranchia - Graptoloidea - Dichograptidae

Taxonomy
Didymograptus (Didymograptus) artus was named by Elles and Wood (1901). Its type specimen is SM A17772 and is a 3D body fossil.

It was recombined as Didymograptus artus by Ruedemann (1947).

Synonymy list
YearName and author
1901Didymograptus (Didymograptus) artus Elles and Wood pp. 48-49 figs. fig. 30; pi. 4, figs 6a-d.
1947Didymograptus artus Ruedemann pp. 326-327 figs. pl. 54, figs 3-7, 9 [non figs 8, 10].
1987Didymograptus (Didymograptus) artus Fortey and Owens pp. 258 - 259 figs. 112b-d, 113

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
phylumHemichordataBateson 1885
classPterobranchiaLankester 1877
RankNameAuthor
subclassGraptolithina(Bronn 1849)
orderGraptoloideaLapworth 1875
suborderDichograptinaLapworth 1873
familyDichograptidaeLapworth 1873
genusDidymograptusMcCoy 1851
subgenusDidymograptusM'Coy 1851
speciesartusElles and Wood 1901

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.

†Didymograptus (Didymograptus) artus Elles and Wood 1901
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Diagnosis
ReferenceDiagnosis
R. A. Fortey and R. M. Owens 1987Didymograptus (Didymograptus) with th l 1 dicalycal; sicula slender, l-3-l-6mm long; stipes 0-4-0-6mm wide at th 1, expanding gradually to a width of l-2-l-6mm at about th 20 and almost constant thereafter. Thecal spacing typically dense, 18 in 10 mm distally or more, although specimens with 15-17 per 10 mm may prove to belong in the species. Distal stipe characters: d 40°-55°, cp acute, 30°-45°.