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Campograptus
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Neograptina
Family:
Monograptidae
Formal Genus Name and Reference:
Campograptus OBUT, 1949, p. 24
Type Species:
*Monograptus convolutus var. communis Lapworth, 1876b, p. 358, SD OBUT, 1964, p. 328
Images
(Click to enlarge in a new window)
Fig. 300, 1a-b. *C. communis (Lapworth), la, lectotype (Р̈ibyl, 1948a, p. 48), BU 1684a, proximal end not shown (Lapworth, 1876b, fig. 4a), 1 b , proximal end in relief, internal mould, SM A24487, C horizon (Demirastrites triangulatus Biozone), Rheidol Gorge (Sudbury, 1958, fig. 20). Scale bars, 1 mm
Synonyms
Monograptus
Geographic Distribution
worldwide
Age Range
Beginning Stage in Treatise Usage:
Silurian (Llandovery (Aeronian, Demirastrites triangulatus Biozone))
Beginning International Stage:
Aeronian
Fraction Up In Beginning Stage:
0
Beginning Date:
440.49
Ending Stage in Treatise Usage:
Silurian, Llandovery (Aeronian, Stimulograptus sedgwickii Biozone)
Ending International Stage:
Aeronian
Fraction Up In Ending Stage:
0
Ending Date:
438.59
Description
Tubarium gently to strongly dorsally curved proximally, becoming almost straight distally, thecae triangular with no overlap, prothecal bases broad, simply hooked metathecae, thecal hook proximally involving primarily dorsal and, to much lesser extent, ventral thecal wall, and mesially and distally probably dorsal wall only, thecal apertures of proximal, mesial and, in some species, even distal thecae possess paired ventro-laterally or proximo-laterally directed spines, proximal thecae may be axially elongated
References
Obut, A. M. 1949. Polevoi atlas rukovodyashchikh graptolitov verkhnego silura Kirgizskoi SSR. [Field Atlas of leading graptolites of the Upper Silurian of Kirgiz SSR.] Akademia. Nauk SSSR, Kirgiz. Filial, Geologii Institut. Frunze. 56 p. 7 pl. In Russian.
Museum or Author Information
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Neograptina
Family:
Monograptidae
Formal Genus Name and Reference:
Campograptus OBUT, 1949, p. 24
Type Species:
*Monograptus convolutus var. communis Lapworth, 1876b, p. 358, SD OBUT, 1964, p. 328
Images
(Click to enlarge in a new window)
Fig. 300, 1a-b. *C. communis (Lapworth), la, lectotype (Р̈ibyl, 1948a, p. 48), BU 1684a, proximal end not shown (Lapworth, 1876b, fig. 4a), 1 b , proximal end in relief, internal mould, SM A24487, C horizon (Demirastrites triangulatus Biozone), Rheidol Gorge (Sudbury, 1958, fig. 20). Scale bars, 1 mm
Synonyms
Monograptus
Geographic Distribution
worldwide
Age Range
Beginning Stage in Treatise Usage:
Silurian (Llandovery (Aeronian, Demirastrites triangulatus Biozone))
Beginning International Stage:
Aeronian
Fraction Up In Beginning Stage:
0
Beginning Date:
440.49
Ending Stage in Treatise Usage:
Silurian, Llandovery (Aeronian, Stimulograptus sedgwickii Biozone)
Ending International Stage:
Aeronian
Fraction Up In Ending Stage:
0
Ending Date:
438.59
Description
Tubarium gently to strongly dorsally curved proximally, becoming almost straight distally, thecae triangular with no overlap, prothecal bases broad, simply hooked metathecae, thecal hook proximally involving primarily dorsal and, to much lesser extent, ventral thecal wall, and mesially and distally probably dorsal wall only, thecal apertures of proximal, mesial and, in some species, even distal thecae possess paired ventro-laterally or proximo-laterally directed spines, proximal thecae may be axially elongated
References
Obut, A. M. 1949. Polevoi atlas rukovodyashchikh graptolitov verkhnego silura Kirgizskoi SSR. [Field Atlas of leading graptolites of the Upper Silurian of Kirgiz SSR.] Akademia. Nauk SSSR, Kirgiz. Filial, Geologii Institut. Frunze. 56 p. 7 pl. In Russian.