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Pleurograptus
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Unknown
Family:
Dicranograptidae
Formal Genus Name and Reference:
Pleurograptus Nicholson, 1867b, p. 257,
Type Species:
Cladograpsus linearis Carruthers, 1858, p. 467; OD
Images
(Click to enlarge in a new window)
Fig. 243,2a–b. *P. linearis (Carruthers); 2a, NHMUK PM Q848, large specimen, Hartfell Shale, Scotland, UK, scale bar, 5 mm (Bulman, 1970, fig. 87,1); 2b, NHMUK PM Q848, proximal end, scale bar, 1 mm (Strachan, 1969, fig. 1C).
Synonyms
Pleurograpsus
Geographic Distribution
UK,
Canada, China, USA
Age Range
Beginning Stage in Treatise Usage:
Upper Ordovician (Katian, Dicellograptus ornatus Biozone
Beginning International Stage:
Katian
Fraction Up In Beginning Stage:
0
Beginning Date:
452.75
Ending Stage in Treatise Usage:
Upper Ordovician (Katian, Paraorthograptus pacificus Biozone
Ending International Stage:
Katian
Fraction Up In Ending Stage:
0
Ending Date:
445.21
Description
Dicranograptid with cladial stipes of several orders; proximal development uncertain sicula very slender and long, may be resorbed in mature specimens; thecae slender, ventral side parallel to dorsal side, with distinct geniculum.
References
Museum or Author Information
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Unknown
Family:
Dicranograptidae
Formal Genus Name and Reference:
Pleurograptus Nicholson, 1867b, p. 257,
Type Species:
Cladograpsus linearis Carruthers, 1858, p. 467; OD
Images
(Click to enlarge in a new window)
Fig. 243,2a–b. *P. linearis (Carruthers); 2a, NHMUK PM Q848, large specimen, Hartfell Shale, Scotland, UK, scale bar, 5 mm (Bulman, 1970, fig. 87,1); 2b, NHMUK PM Q848, proximal end, scale bar, 1 mm (Strachan, 1969, fig. 1C).
Synonyms
Pleurograpsus
Geographic Distribution
UK,
Canada, China, USA
Age Range
Beginning Stage in Treatise Usage:
Upper Ordovician (Katian, Dicellograptus ornatus Biozone
Beginning International Stage:
Katian
Fraction Up In Beginning Stage:
0
Beginning Date:
452.75
Ending Stage in Treatise Usage:
Upper Ordovician (Katian, Paraorthograptus pacificus Biozone
Ending International Stage:
Katian
Fraction Up In Ending Stage:
0
Ending Date:
445.21
Description
Dicranograptid with cladial stipes of several orders; proximal development uncertain sicula very slender and long, may be resorbed in mature specimens; thecae slender, ventral side parallel to dorsal side, with distinct geniculum.