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Loganograptus
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Unknown
Family:
Dichograptidae
Formal Genus Name and Reference:
Loganograptus HALL, 1868, p. 237
Type Species:
* Graptolithus logani HALL, 1858, p. 115, OD
Images
(Click to enlarge in a new window)
Fig. 187,2. { }^{*} L. logani (Hall), GSC 932a, Lévis, Quebec, Canada, scale bar, 10 mm (Hall, 1865, pl. 9,2).
Synonyms
Geographic Distribution
worldwide
Age Range
Beginning Stage in Treatise Usage:
Lower Ordovician (Floian, Baltograptus vacillans Biozone)
Beginning International Stage:
Floian
Fraction Up In Beginning Stage:
0
Beginning Date:
477.08
Ending Stage in Treatise Usage:
Middle Ordovician (Dapingian, Expansograptus hirundo Biozone)
Ending International Stage:
Dapingian
Fraction Up In Ending Stage:
0
Ending Date:
469.42
Description
Large multiramous horizontal to subhorizontal tubarium with two to three consecutive distal bifurcations starting from a tetragraptid proximal end and without distal dichotomies, central disc present, thecae simple with moderate inclination and overlap
References
Hall, James. 1868. Introduction to the study of the Graptolitidae. 20th Annual Report of the Regents of the University of the State of New York. Van Benthuysen & Sons. Albany. p. 169-240.
Museum or Author Information
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Unknown
Family:
Dichograptidae
Formal Genus Name and Reference:
Loganograptus HALL, 1868, p. 237
Type Species:
* Graptolithus logani HALL, 1858, p. 115, OD
Images
(Click to enlarge in a new window)
Fig. 187,2. { }^{*} L. logani (Hall), GSC 932a, Lévis, Quebec, Canada, scale bar, 10 mm (Hall, 1865, pl. 9,2).
Synonyms
Geographic Distribution
worldwide
Age Range
Beginning Stage in Treatise Usage:
Lower Ordovician (Floian, Baltograptus vacillans Biozone)
Beginning International Stage:
Floian
Fraction Up In Beginning Stage:
0
Beginning Date:
477.08
Ending Stage in Treatise Usage:
Middle Ordovician (Dapingian, Expansograptus hirundo Biozone)
Ending International Stage:
Dapingian
Fraction Up In Ending Stage:
0
Ending Date:
469.42
Description
Large multiramous horizontal to subhorizontal tubarium with two to three consecutive distal bifurcations starting from a tetragraptid proximal end and without distal dichotomies, central disc present, thecae simple with moderate inclination and overlap
References
Hall, James. 1868. Introduction to the study of the Graptolitidae. 20th Annual Report of the Regents of the University of the State of New York. Van Benthuysen & Sons. Albany. p. 169-240.