Basic info Taxonomic history Classification Relationships
Morphology Ecology and taphonomy External Literature Search Age range and collections

Orthograptus quadrimucronatus

Pterobranchia - Diplograptoidea - Diplograptidae

Taxonomy
Graptolithus quadrimucronatus was named by Hall (1865). It is the type species of Orthograptus.

It was recombined as Diplograptus (Orthograptus) quadrimucronatus by Elles and Wood (1907); it was recombined as Glossograptus (Orthograptus) quadrimucronatus by Ruedemann (1908); it was recombined as Glossograptus quadrimucronatus by Ruedemann (1947); it was recombined as Orthograptus quadrimucronatus by Lapworth (1873), Berry (1960) and Goldman (1995).

Synonymy list
YearName and author
1865Graptolithus quadrimucronatus Hall pp. 144-146 figs. pl. 13 f. 1-10
1873Orthograptus quadrimucronatus Lapworth p. 133 figs. PI. 6, fig. 20
1907Diplograptus (Orthograptus) quadrimucronatus Elles and Wood pp. 223-224 figs. pl. 28:1a-d; txt. f. 145a-f
1908Glossograptus (Orthograptus) quadrimucronatus Ruedemann pp. 385-392
1947Glossograptus quadrimucronatus Ruedemann pp. 452-454 figs. pl.. 78 f. 1-5
1960Orthograptus quadrimucronatus Berry p. 91 figs. pl. 18 f. 1
1995Orthograptus quadrimucronatus Goldman pp. 525 - 530 figs. 10.1-10.19, 11.1-11.6, 15.1-15.5, 17.5-17.9

Is something missing? Join the Paleobiology Database and enter the data

RankNameAuthor
kingdomAnimalia()
Triploblastica
Nephrozoa
Deuterostomia
Ambulacraria
phylumHemichordataBateson 1885
classPterobranchiaLankester 1877
RankNameAuthor
classGraptolithina(Bronn 1849)
orderDiplograptoidea()
familyDiplograptidae
subfamilyOrthograptinae
genusOrthograptusLapworth 1873
speciesquadrimucronatus()

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
D. Goldman 1995Orthograptus with short single apertural to subapertural spine on thl' and thl2; subsequent thecae bear paired apertural spines; rhabdosomes septate, widen gradually, bear no unusually long thecal spines.