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Clonograptus
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Unknown
Family:
Dichograptidae
Formal Genus Name and Reference:
Clonograptus Hall & Nicholson in NICHOLSON, 1873, p. 138
Type Species:
* Graptolithus rigidus Hall, 1858, p. 121, SD MILLER, 1889, p. 179
Images
(Click to enlarge in a new window)
Fig. 187,3a. * C. rigidus (Hall), lectotype, GSC 935b, arrow indicates position of sicula, scale bar, 10 mm (Lindholm & Maletz, 1989, p. 719, fig. 2D), ——Fig. 187,3b. C. flexilis (Hall, 1858), lectotype, GSC 965c, arrow indicates position of sicula, scale bar, 10 mm (Lindholm & Maletz, 1989, p. 724, fig. 3A), ——Fig. 187,3c-e. C. multiplex (Nicholson, 1868d), 3c, lectotype, NHMUK PM Q31, arrow indicates position of sicula, scale bar, 10 mm (Lindholm & Maletz, 1989, fig. 7), 3d, LO 1748T, holotype of Anthograptus nidus Törnquist, 1901, scale bar, 10 mm (Lindholm & Maletz, 1989, fig. 11c), 3e, reconstruction from latex cast of juvenile, dicalycal theca striped, scale bar, 1 mm (Maletz, 1992, fig. 1e)
Synonyms
Temnograptus, Anthograptus
Geographic Distribution
worldwide
Age Range
Beginning Stage in Treatise Usage:
Lower Ordovician (upper Tremadocian, Hunnegraptus copiosus Biozone-Floian, Tshallograptus fruticosus Biozone)
Beginning International Stage:
Tremadocian
Fraction Up In Beginning Stage:
0
Beginning Date:
481.96
Ending Stage in Treatise Usage:
Lower Ordovician (Floian, Tshallograptus fruticosus Biozone)
Ending International Stage:
Floian
Fraction Up In Ending Stage:
0
Ending Date:
471.26
Description
Multiramous, horizontal to subhorizontal dichograptid with increasing distances of numerous distal, more irregularly placed dichotomies, thecae simple, widening tubes with moderate overlap and without extended rutella, proximal development isograptid, dextral, or sinistral
References
Nicholson, H. A. 1873. On some fossils from the Quebec group of Point Levis, Quebec. Annals and Magazine of Natural History (series 4) 11:133-143.
Museum or Author Information
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Unknown
Family:
Dichograptidae
Formal Genus Name and Reference:
Clonograptus Hall & Nicholson in NICHOLSON, 1873, p. 138
Type Species:
* Graptolithus rigidus Hall, 1858, p. 121, SD MILLER, 1889, p. 179
Images
(Click to enlarge in a new window)
Fig. 187,3a. * C. rigidus (Hall), lectotype, GSC 935b, arrow indicates position of sicula, scale bar, 10 mm (Lindholm & Maletz, 1989, p. 719, fig. 2D), ——Fig. 187,3b. C. flexilis (Hall, 1858), lectotype, GSC 965c, arrow indicates position of sicula, scale bar, 10 mm (Lindholm & Maletz, 1989, p. 724, fig. 3A), ——Fig. 187,3c-e. C. multiplex (Nicholson, 1868d), 3c, lectotype, NHMUK PM Q31, arrow indicates position of sicula, scale bar, 10 mm (Lindholm & Maletz, 1989, fig. 7), 3d, LO 1748T, holotype of Anthograptus nidus Törnquist, 1901, scale bar, 10 mm (Lindholm & Maletz, 1989, fig. 11c), 3e, reconstruction from latex cast of juvenile, dicalycal theca striped, scale bar, 1 mm (Maletz, 1992, fig. 1e)
Synonyms
Temnograptus, Anthograptus
Geographic Distribution
worldwide
Age Range
Beginning Stage in Treatise Usage:
Lower Ordovician (upper Tremadocian, Hunnegraptus copiosus Biozone-Floian, Tshallograptus fruticosus Biozone)
Beginning International Stage:
Tremadocian
Fraction Up In Beginning Stage:
0
Beginning Date:
481.96
Ending Stage in Treatise Usage:
Lower Ordovician (Floian, Tshallograptus fruticosus Biozone)
Ending International Stage:
Floian
Fraction Up In Ending Stage:
0
Ending Date:
471.26
Description
Multiramous, horizontal to subhorizontal dichograptid with increasing distances of numerous distal, more irregularly placed dichotomies, thecae simple, widening tubes with moderate overlap and without extended rutella, proximal development isograptid, dextral, or sinistral
References
Nicholson, H. A. 1873. On some fossils from the Quebec group of Point Levis, Quebec. Annals and Magazine of Natural History (series 4) 11:133-143.