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Paraplectograptus

Pterobranchia - Bireclinata - Retiolitidae

Taxonomy
Paraplectograptus is a genus. It is not extant.

It was assigned to Plectograptinae by Lenz and Melchin (1987); and to Graptoloidea by Sepkoski (2002).

Synonymy list
YearName and author
1987Paraplectograptus Lenz and Melchin p. 168
2002Paraplectograptus Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
Ambulacraria
phylumHemichordataBateson 1885
classPterobranchiaLankester 1877
classGraptolithina(Bronn 1849)
Graptoloida
Eugraptoloida
RankNameAuthor
Reclinata
superorderPanbireclinata
orderBireclinata
infraorderAxonophora(Frech 1897)
infraorderNeograptinaStorch et al. 2011
superfamilyRetiolitoideaLapworth 1873
familyRetiolitidaeLapworth 1873
subfamilyPlectograptinaeBoucek and M√ľnch 1952
genusParaplectograptus

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.

Diagnosis
ReferenceDiagnosis
A. C. Lenz and M. J. Melchin 1987Ancora four-pronged; corona simple, of few meshes, somewhat rhomboid in profile, and square in cross-section. Rhabdosome walls (clathrium) sharply angular. Virgula central proximally, quickly moving to ventral side and becoming incorporated in, and part of, ventral wall. Horizontal lists arise alternately on left and right sides of virgula and join outer walls. Dorsal wall either of zig-zag pleural lists connected directly to outer walls, or with very short horizontal lists connecting pleural lists to outer walls. Reticulum may or may not be present, lists generally few in number and finer than clathrium, sometimes more common in proximal region and absent in distal portions, and/-Clathrial seams face in, those of the reticulum face out.