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Diplograptus
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Unknown
Family:
Diplograptidae
Formal Genus Name and Reference:
Diplograptus M‘COY, 1850, p. 270
Type Species:
*Prionotus pristis Hisinger, 1837, p. 114, SD GURLEY, 1896, p. 78
Images
(Click to enlarge in a new window)
Fig. 229,9a-c. { }^{*} D. pristis (Hisinger), 9a, holotype, NRM-PZ Cn 59728, Draggabro, Dalarna, Sweden (new, drawing by John F. Riva), 9b, GIT 708-1, infrared photo, obverse view, showing sicular length, 9c, GIT 708-1, reverse view, Paasvere drill core, Estonia ( b-c, Mitchell, Maletz, \\& Goldman, 2009, fig. 1 \\mathrm{E}-2 \\mathrm{E}). Scale bars, 1 mm.
Synonyms
Diplograpsis
Geographic Distribution
China, Europe, UK, Estonia, Sweden, Canada, USA, Russia (Siberia)
Age Range
Beginning Stage in Treatise Usage:
Upper Ordovician (upper Katian, Pleurograptus linearis Biozone)
Beginning International Stage:
Katian
Fraction Up In Beginning Stage:
0
Beginning Date:
448.98
Ending Stage in Treatise Usage:
Upper Ordovician (Hirnantian, Normalograptus extraordinarius Biozone)
Ending International Stage:
Hirnantian
Fraction Up In Ending Stage:
0
Ending Date:
443.07
Description
Diplograptines with bluntly rounded proximal end, th $1^{1}$ and th $1^{2}$ with subapertural or apertural spines, tubarium with or without median septum and alternating thecal origin, thecal gradient with proximally geniculate to distally straight, outward-inclined ventral sides and everted thecal apertures, proximal development probably of pattern G astogeny
References
M'Coy, Frederick. 1850. On Some New Genera and Species of Silurian Radiata in the Collection of the University of Cambridge. Annals and Magazine of Natural History (series 2) 6:270-290.
Museum or Author Information
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Unknown
Family:
Diplograptidae
Formal Genus Name and Reference:
Diplograptus M‘COY, 1850, p. 270
Type Species:
*Prionotus pristis Hisinger, 1837, p. 114, SD GURLEY, 1896, p. 78
Images
(Click to enlarge in a new window)
Fig. 229,9a-c. { }^{*} D. pristis (Hisinger), 9a, holotype, NRM-PZ Cn 59728, Draggabro, Dalarna, Sweden (new, drawing by John F. Riva), 9b, GIT 708-1, infrared photo, obverse view, showing sicular length, 9c, GIT 708-1, reverse view, Paasvere drill core, Estonia ( b-c, Mitchell, Maletz, \\& Goldman, 2009, fig. 1 \\mathrm{E}-2 \\mathrm{E}). Scale bars, 1 mm.
Synonyms
Diplograpsis
Geographic Distribution
China, Europe, UK, Estonia, Sweden, Canada, USA, Russia (Siberia)
Age Range
Beginning Stage in Treatise Usage:
Upper Ordovician (upper Katian, Pleurograptus linearis Biozone)
Beginning International Stage:
Katian
Fraction Up In Beginning Stage:
0
Beginning Date:
448.98
Ending Stage in Treatise Usage:
Upper Ordovician (Hirnantian, Normalograptus extraordinarius Biozone)
Ending International Stage:
Hirnantian
Fraction Up In Ending Stage:
0
Ending Date:
443.07
Description
Diplograptines with bluntly rounded proximal end, th $1^{1}$ and th $1^{2}$ with subapertural or apertural spines, tubarium with or without median septum and alternating thecal origin, thecal gradient with proximally geniculate to distally straight, outward-inclined ventral sides and everted thecal apertures, proximal development probably of pattern G astogeny
References
M'Coy, Frederick. 1850. On Some New Genera and Species of Silurian Radiata in the Collection of the University of Cambridge. Annals and Magazine of Natural History (series 2) 6:270-290.