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Plegmatograptus
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Subclass:
Graptolithina
Order:
Graptoloidea
Suborder:
Axonophora
Infraorder:
Diplograptina
Family:
Lasiograptidae
Formal Genus Name and Reference:
Plegmatograptus Elles & WOOD, 1908, p. 340
Type Species:
Retiolites (Plegmatograptus) nebula Elles & WOOD, 1908, p. 337, 340, OD
Images
(Click to enlarge in a new window)
Fig. 234,5a-b. * P. nebula, 5a, lectotype (selected by Williams, 1982b, p. 253), BGS GSE 5615, Hartfell Shale, Scotland, UK (Elles & Wood, 1908, fig. 222b), 5b, BGS GSE 5539, Hartfell Shale, Scotland (Bulman, 1970, fig. 95,4). Scale bars, 1 mm
Synonyms
Geographic Distribution
Australia, China, UK, USA
Age Range
Beginning Stage in Treatise Usage:
Upper Ordovician (Katian, Dicranograptus clingani Biozone)
Beginning International Stage:
Katian
Fraction Up In Beginning Stage:
0
Beginning Date:
452.75
Ending Stage in Treatise Usage:
Upper Ordovician (Katian, Pleurograptus linearis Biozone)
Ending International Stage:
Katian
Fraction Up In Ending Stage:
100
Ending Date:
445.21
Description
Lasiograptids with reticulum and well-developed lacinia, fusellum strongly attenuated or lacking, details of development unknown
References
Elles, G. L., & E. M. R. Wood. 1908. A Monograph of British Graptolites. Part 7. Palaeontographical Society of London Monograph 62(305):cxxi-clviii, 273-358, pl. 32-35
Museum or Author Information
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Subclass:
Graptolithina
Order:
Graptoloidea
Suborder:
Axonophora
Infraorder:
Diplograptina
Family:
Lasiograptidae
Formal Genus Name and Reference:
Plegmatograptus Elles & WOOD, 1908, p. 340
Type Species:
Retiolites (Plegmatograptus) nebula Elles & WOOD, 1908, p. 337, 340, OD
Images
(Click to enlarge in a new window)
Fig. 234,5a-b. * P. nebula, 5a, lectotype (selected by Williams, 1982b, p. 253), BGS GSE 5615, Hartfell Shale, Scotland, UK (Elles & Wood, 1908, fig. 222b), 5b, BGS GSE 5539, Hartfell Shale, Scotland (Bulman, 1970, fig. 95,4). Scale bars, 1 mm
Synonyms
Geographic Distribution
Australia, China, UK, USA
Age Range
Beginning Stage in Treatise Usage:
Upper Ordovician (Katian, Dicranograptus clingani Biozone)
Beginning International Stage:
Katian
Fraction Up In Beginning Stage:
0
Beginning Date:
452.75
Ending Stage in Treatise Usage:
Upper Ordovician (Katian, Pleurograptus linearis Biozone)
Ending International Stage:
Katian
Fraction Up In Ending Stage:
100
Ending Date:
445.21
Description
Lasiograptids with reticulum and well-developed lacinia, fusellum strongly attenuated or lacking, details of development unknown
References
Elles, G. L., & E. M. R. Wood. 1908. A Monograph of British Graptolites. Part 7. Palaeontographical Society of London Monograph 62(305):cxxi-clviii, 273-358, pl. 32-35