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Pristiograptus
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Neograptina
Family:
Monograptidae
Formal Genus Name and Reference:
Pristiograptus JAEKEL, 1889, p. 667
Type Species:
* P. frequens, OD
Images
(Click to enlarge in a new window)
Fig. 304,8a-d. * P. frequens, 8a, neotype, MB.G 458.3.1, selected by ŠTORCH, Manda, & Loydell, 2014, p. 1016 (Jaeger, 1991, fig. 26.9), 86-d, P. dubius (Suess, 1851), isolated specimens, glacial boulder, note the lack of sicular annuli (Maletz, 1999a, fig. 2Q-S). Scale bars, 1 mm.
Synonyms
Geographic Distribution
worldwide
Age Range
Beginning Stage in Treatise Usage:
Silurian, Llandovery (Rhuddanian, Cystograptus vesiculosus Biozone)
Beginning International Stage:
Rhuddanian
Fraction Up In Beginning Stage:
0
Beginning Date:
443.07
Ending Stage in Treatise Usage:
Silurian, Pridoli (Skalograptus perneri Biozone)
Ending International Stage:
Pridoli
Fraction Up In Ending Stage:
0
Ending Date:
419
Description
Tubarium straight or gently dorsally or ventrally curved, thecal length increasing along first few thecae, later constant, sicula of medium length with low origin of th 1, thecae straight, cylindrical, with straight or nearly straight ventral wall, thecal aperture without any supplementary structures except thickened apertural rim
References
Jaekel, Otto. 1889. Über das Alter des sog. Graptolithengesteins mit besonderer Berücksichtigung der in demselben enthaltenen Graptolithen. Zeitschrift der Deutschen Geologischen Gesellschaft 41:653716.
Museum or Author Information
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Neograptina
Family:
Monograptidae
Formal Genus Name and Reference:
Pristiograptus JAEKEL, 1889, p. 667
Type Species:
* P. frequens, OD
Images
(Click to enlarge in a new window)
Fig. 304,8a-d. * P. frequens, 8a, neotype, MB.G 458.3.1, selected by ŠTORCH, Manda, & Loydell, 2014, p. 1016 (Jaeger, 1991, fig. 26.9), 86-d, P. dubius (Suess, 1851), isolated specimens, glacial boulder, note the lack of sicular annuli (Maletz, 1999a, fig. 2Q-S). Scale bars, 1 mm.
Synonyms
Geographic Distribution
worldwide
Age Range
Beginning Stage in Treatise Usage:
Silurian, Llandovery (Rhuddanian, Cystograptus vesiculosus Biozone)
Beginning International Stage:
Rhuddanian
Fraction Up In Beginning Stage:
0
Beginning Date:
443.07
Ending Stage in Treatise Usage:
Silurian, Pridoli (Skalograptus perneri Biozone)
Ending International Stage:
Pridoli
Fraction Up In Ending Stage:
0
Ending Date:
419
Description
Tubarium straight or gently dorsally or ventrally curved, thecal length increasing along first few thecae, later constant, sicula of medium length with low origin of th 1, thecae straight, cylindrical, with straight or nearly straight ventral wall, thecal aperture without any supplementary structures except thickened apertural rim
References
Jaekel, Otto. 1889. Über das Alter des sog. Graptolithengesteins mit besonderer Berücksichtigung der in demselben enthaltenen Graptolithen. Zeitschrift der Deutschen Geologischen Gesellschaft 41:653716.