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Pseudoclimacograptus
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Unknown
Family:
Climacograptidae
Formal Genus Name and Reference:
Pseudoclimacograptus Pर̌IBYL, 1947, p. 5
Type Species:
*Climacograptus scharenbergi LAPWORTH, 1976a, p. 6, OD
Images
(Click to enlarge in a new window)
Fig. 240,2a-c. * P. scharenbergi (LAPWORTH), 2 a-b, specimen in reverse ( a ) and obverse (b) views, PMO 118.047a,b, latex casts, Arnestad Formation, Oslo Region, Norway, 2 c, topotype, SM A19704, reverse view, Lower Hartfell Formation, Scotland, UK (see Williams, 1994, fig. 7 g ), scale bars, 1 mm (new).
Synonyms
Geographic Distribution
China, Russia, Belgium, UK, Norway, Sweden, USA, Canada
Age Range
Beginning Stage in Treatise Usage:
Upper Ordovician (Sandbian, Nemagraptus gracilis Biozone)
Beginning International Stage:
Sandbian
Fraction Up In Beginning Stage:
0
Beginning Date:
458.18
Ending Stage in Treatise Usage:
Upper Ordovician (Katian, Pleurograptus linearis Biozone)
Ending International Stage:
Katian
Fraction Up In Ending Stage:
0
Ending Date:
445.21
Description
Climacograptids with wide, rounded proximal end, strong zigzag median septum, distinct intrathecal folds, proximal end with virgellar spine and with or without subapertural spine on th $1^{1}$, thecal apertures straight, horizontal, three-vaned nematularium in mature specimens, proximal end of pattern D astogeny
References
Museum or Author Information
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Unknown
Family:
Climacograptidae
Formal Genus Name and Reference:
Pseudoclimacograptus Pर̌IBYL, 1947, p. 5
Type Species:
*Climacograptus scharenbergi LAPWORTH, 1976a, p. 6, OD
Images
(Click to enlarge in a new window)
Fig. 240,2a-c. * P. scharenbergi (LAPWORTH), 2 a-b, specimen in reverse ( a ) and obverse (b) views, PMO 118.047a,b, latex casts, Arnestad Formation, Oslo Region, Norway, 2 c, topotype, SM A19704, reverse view, Lower Hartfell Formation, Scotland, UK (see Williams, 1994, fig. 7 g ), scale bars, 1 mm (new).
Synonyms
Geographic Distribution
China, Russia, Belgium, UK, Norway, Sweden, USA, Canada
Age Range
Beginning Stage in Treatise Usage:
Upper Ordovician (Sandbian, Nemagraptus gracilis Biozone)
Beginning International Stage:
Sandbian
Fraction Up In Beginning Stage:
0
Beginning Date:
458.18
Ending Stage in Treatise Usage:
Upper Ordovician (Katian, Pleurograptus linearis Biozone)
Ending International Stage:
Katian
Fraction Up In Ending Stage:
0
Ending Date:
445.21
Description
Climacograptids with wide, rounded proximal end, strong zigzag median septum, distinct intrathecal folds, proximal end with virgellar spine and with or without subapertural spine on th $1^{1}$, thecal apertures straight, horizontal, three-vaned nematularium in mature specimens, proximal end of pattern D astogeny