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Petalolithus
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Neograptina
Family:
Retiolitidae
Formal Genus Name and Reference:
Petalolithus SUESS, 1851, p. 100
Type Species:
*Prionotus folium Hisinger, 1837, p. 114, SD LAPWORTH, 1873b, Table 1, facing p. 555
Images
(Click to enlarge in a new window)
Fig. 262,2a-c. *P. folium (Hisinger), 2a, NRM-PZ Cn 69037, (new), 2 b, lectotype (designated by Bouček & PŘíbyL, 1942, p. 8), NRM-PZ Cn 69040 (new), 2c, PŠ 821 , showing ancora and long, slender nematu- larium, Tmaň, Czech Republic (Štorch, 1998a, fig. 5,2 c ). Scale bars, 1 mm, ——Fig. 262,2d. Petalolithus sp., holotype of Corbograptus enigmatica Koren' & Rickards, 1996, CNIGR 197/12879, southern Urals, Russia, scale bar, 1 mm (Koren' & Rickards, 1996, fig. 20i)
Synonyms
Petalograptus, Corbograptus
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 (Telychian, Spirograptus guerichi Biozone)
Ending International Stage:
Telychian
Fraction Up In Ending Stage:
0
Ending Date:
432.93
Description
Robust petalolithine with pattern I astogeny, possessing rectangular thecae with either straight or concave ventral sides, cross section of tubarium rectangular to oval, ancora present, sometimes also partial ancora sleeve with lists, partial median septum on obverse side
References
Suess, Eduard. 1851. Über böhmische Graptolithen. Naturwissenschaftliche Abhandlungen von W. Haidinger 4(4):87-134.
Museum or Author Information
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Neograptina
Family:
Retiolitidae
Formal Genus Name and Reference:
Petalolithus SUESS, 1851, p. 100
Type Species:
*Prionotus folium Hisinger, 1837, p. 114, SD LAPWORTH, 1873b, Table 1, facing p. 555
Images
(Click to enlarge in a new window)
Fig. 262,2a-c. *P. folium (Hisinger), 2a, NRM-PZ Cn 69037, (new), 2 b, lectotype (designated by Bouček & PŘíbyL, 1942, p. 8), NRM-PZ Cn 69040 (new), 2c, PŠ 821 , showing ancora and long, slender nematu- larium, Tmaň, Czech Republic (Štorch, 1998a, fig. 5,2 c ). Scale bars, 1 mm, ——Fig. 262,2d. Petalolithus sp., holotype of Corbograptus enigmatica Koren' & Rickards, 1996, CNIGR 197/12879, southern Urals, Russia, scale bar, 1 mm (Koren' & Rickards, 1996, fig. 20i)
Synonyms
Petalograptus, Corbograptus
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 (Telychian, Spirograptus guerichi Biozone)
Ending International Stage:
Telychian
Fraction Up In Ending Stage:
0
Ending Date:
432.93
Description
Robust petalolithine with pattern I astogeny, possessing rectangular thecae with either straight or concave ventral sides, cross section of tubarium rectangular to oval, ancora present, sometimes also partial ancora sleeve with lists, partial median septum on obverse side
References
Suess, Eduard. 1851. Über böhmische Graptolithen. Naturwissenschaftliche Abhandlungen von W. Haidinger 4(4):87-134.