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Triograptus
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Unknown
Family:
Anisograptidae
Formal Genus Name and Reference:
Triograptus Monsen 1925, p. 169
Type Species:
*T. osloensis, OD
Images
(Click to enlarge in a new window)
Fig. 161,7. *T. osloensis, lectotype (selected herein), PMO 60232, scale bar, 5 mm (Monsen, 1925, pl. 4,2)
Synonyms
Geographic Distribution
Norway, ?Argentina
Age Range
Beginning Stage in Treatise Usage:
Lower Ordovician (upper Tremadocian, Kiaerograptus kiaeri Biozone)
Beginning International Stage:
Tremadocian
Fraction Up In Beginning Stage:
0
Beginning Date:
481.96
Ending Stage in Treatise Usage:
Lower Ordovician (upper Tremadocian, Kiaerograptus kiaeri Biozone)
Ending International Stage:
Tremadocian
Fraction Up In Ending Stage:
0
Ending Date:
477.08
Description
Triradiate anisograptid, tubarium comprised of three horizontal, undivided stipes with distinct lateral curvature, details of thecae unknown
References
Museum or Author Information
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Unknown
Family:
Anisograptidae
Formal Genus Name and Reference:
Triograptus Monsen 1925, p. 169
Type Species:
*T. osloensis, OD
Images
(Click to enlarge in a new window)
Fig. 161,7. *T. osloensis, lectotype (selected herein), PMO 60232, scale bar, 5 mm (Monsen, 1925, pl. 4,2)
Synonyms
Geographic Distribution
Norway, ?Argentina
Age Range
Beginning Stage in Treatise Usage:
Lower Ordovician (upper Tremadocian, Kiaerograptus kiaeri Biozone)
Beginning International Stage:
Tremadocian
Fraction Up In Beginning Stage:
0
Beginning Date:
481.96
Ending Stage in Treatise Usage:
Lower Ordovician (upper Tremadocian, Kiaerograptus kiaeri Biozone)
Ending International Stage:
Tremadocian
Fraction Up In Ending Stage:
0
Ending Date:
477.08
Description
Triradiate anisograptid, tubarium comprised of three horizontal, undivided stipes with distinct lateral curvature, details of thecae unknown