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Lobograptus
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Neograptina
Family:
Monograptidae
Formal Genus Name and Reference:
Lobograptus URBANEK, 1958, p. 12
Type Species:
*Monograptus scanicus TULLBERG, 1883, p. 26, OD
Images
(Click to enlarge in a new window)
Fig. 306,7 a-b. * L. scanicus (Tullberg), 7a, syntype, specimen not identified (Tullberg, 1883, pl. 2.42), 7 b, proximal end (Urbanek, 1966, fig. 11). Scale bars, 1 mm
Synonyms
Falcatograptus
Geographic Distribution
worldwide
Age Range
Beginning Stage in Treatise Usage:
Silurian, Wenlock (Homerian, Colonograptus praedeubeli Biozone)
Beginning International Stage:
Homerian
Fraction Up In Beginning Stage:
0
Beginning Date:
430.62
Ending Stage in Treatise Usage:
Ludlow (Ludfordian, Saetograptus leintwardinensis Biozone)
Ending International Stage:
Ludfordian
Fraction Up In Ending Stage:
0
Ending Date:
422.73
Description
Narrow, straight, dorsoventrally or gently ventrally curved tubarium, widening distally, thecae long, with elongate protheca and increasing distal overlap, thecal aperture with asymmetrical or symmetrical lateral lobes that may curve over central part of aperture
References
Urbanek, Adam. 1958. Monograptidae from erratic boulders of Poland. Acta Palaeontologica Polonica 9:1-105.
Museum or Author Information
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Neograptina
Family:
Monograptidae
Formal Genus Name and Reference:
Lobograptus URBANEK, 1958, p. 12
Type Species:
*Monograptus scanicus TULLBERG, 1883, p. 26, OD
Images
(Click to enlarge in a new window)
Fig. 306,7 a-b. * L. scanicus (Tullberg), 7a, syntype, specimen not identified (Tullberg, 1883, pl. 2.42), 7 b, proximal end (Urbanek, 1966, fig. 11). Scale bars, 1 mm
Synonyms
Falcatograptus
Geographic Distribution
worldwide
Age Range
Beginning Stage in Treatise Usage:
Silurian, Wenlock (Homerian, Colonograptus praedeubeli Biozone)
Beginning International Stage:
Homerian
Fraction Up In Beginning Stage:
0
Beginning Date:
430.62
Ending Stage in Treatise Usage:
Ludlow (Ludfordian, Saetograptus leintwardinensis Biozone)
Ending International Stage:
Ludfordian
Fraction Up In Ending Stage:
0
Ending Date:
422.73
Description
Narrow, straight, dorsoventrally or gently ventrally curved tubarium, widening distally, thecae long, with elongate protheca and increasing distal overlap, thecal aperture with asymmetrical or symmetrical lateral lobes that may curve over central part of aperture
References
Urbanek, Adam. 1958. Monograptidae from erratic boulders of Poland. Acta Palaeontologica Polonica 9:1-105.