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Gothograptus
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Subclass:
Graptolithina
Order:
Graptoloidea
Suborder:
Axonophora
Infraorder:
Neograptina
Superfamily:
Retiolitoidea
Family:
Retiolitidae
Subfamily:
Retiolitinae
Formal Genus Name and Reference:
Gothograptus FRECH, 1897, p. 670
Type Species:
*Retiolites nassa HOLM, 1890, p. 25, OD
Images
(Click to enlarge in a new window)
Fig. 276, 4a-b. * G. nassa (Holm), 4a, holotype, NRM-PZ Cn0025546, Wenlock, upper Homerian, Gothograptus nassa Biozone, Gotland, Sweden (Holm, 1890, pl. 2,12), 4b, mature form, Bartoszyce IG-1 drill core, Poland (Kozlowska, 2016, fig. 1A). Scale bars, 1 mm.-_, Fig. 276,4c, G. diminutus KozŁowska, Bates, Zalasiewicz, & Radzevičius, 2019, holotype 4c, ZPAL G.29/21, Wenlock, upper Homerian, Gothograptus nassa Biozone, northeastern Poland (KozłowskaDawidziuk, 2004, fig. 5D). Scale bar, 1 mm.
Synonyms
Geographic Distribution
worldwide
Age Range
Beginning Stage in Treatise Usage:
Silurian, Wenlock (Homerian, Cyrtograptus lundgreni Biozone)
Beginning International Stage:
Homerian
Fraction Up In Beginning Stage:
0
Beginning Date:
430.62
Ending Stage in Treatise Usage:
Silurian, Wenlock (Homerian, Colonograptus praedeubeli/deubeli Biozone)
Ending International Stage:
Homerian
Fraction Up In Ending Stage:
100
Ending Date:
426.74
Description
Finite tubarium with appendix, ancora umbrella with strongly undulating rim and paired ventral lobes, outer ancora in some species, nema with connecting lists, incorporated into obverse ancora sleeve wall above first or second theca, reverse side of ancora sleeve with oblique parietal lists, ventral side with thecal lips, genicular lists, mid-ventral lists, long lateral apertural lists, and short pleural lists, ancora sleeve and ventral thecal walls densely reticulated, genicular hoods variably formed from microfuselli or a meshwork of lists, extensive veils cover the apertures in some taxa, ancora sleeve lists with seams facing inward, bandages with pustules
References
Frech, Fritz. 1897. Lethaea Geognostica oder Beschreibung und Abbildung für die Gebirgs-Formationen bezeichnendsten Versteinerungen, Herausgegeben von einer Vereinigung von Palaeontologen, 1. Theil, Lethaea Palaeozoica. E. Schweizerbart'sche Verlagshandlung. Stuttgart. 690 p.
Museum or Author Information
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Subclass:
Graptolithina
Order:
Graptoloidea
Suborder:
Axonophora
Infraorder:
Neograptina
Superfamily:
Retiolitoidea
Family:
Retiolitidae
Subfamily:
Retiolitinae
Formal Genus Name and Reference:
Gothograptus FRECH, 1897, p. 670
Type Species:
*Retiolites nassa HOLM, 1890, p. 25, OD
Images
(Click to enlarge in a new window)
Fig. 276, 4a-b. * G. nassa (Holm), 4a, holotype, NRM-PZ Cn0025546, Wenlock, upper Homerian, Gothograptus nassa Biozone, Gotland, Sweden (Holm, 1890, pl. 2,12), 4b, mature form, Bartoszyce IG-1 drill core, Poland (Kozlowska, 2016, fig. 1A). Scale bars, 1 mm.-_, Fig. 276,4c, G. diminutus KozŁowska, Bates, Zalasiewicz, & Radzevičius, 2019, holotype 4c, ZPAL G.29/21, Wenlock, upper Homerian, Gothograptus nassa Biozone, northeastern Poland (KozłowskaDawidziuk, 2004, fig. 5D). Scale bar, 1 mm.
Synonyms
Geographic Distribution
worldwide
Age Range
Beginning Stage in Treatise Usage:
Silurian, Wenlock (Homerian, Cyrtograptus lundgreni Biozone)
Beginning International Stage:
Homerian
Fraction Up In Beginning Stage:
0
Beginning Date:
430.62
Ending Stage in Treatise Usage:
Silurian, Wenlock (Homerian, Colonograptus praedeubeli/deubeli Biozone)
Ending International Stage:
Homerian
Fraction Up In Ending Stage:
100
Ending Date:
426.74
Description
Finite tubarium with appendix, ancora umbrella with strongly undulating rim and paired ventral lobes, outer ancora in some species, nema with connecting lists, incorporated into obverse ancora sleeve wall above first or second theca, reverse side of ancora sleeve with oblique parietal lists, ventral side with thecal lips, genicular lists, mid-ventral lists, long lateral apertural lists, and short pleural lists, ancora sleeve and ventral thecal walls densely reticulated, genicular hoods variably formed from microfuselli or a meshwork of lists, extensive veils cover the apertures in some taxa, ancora sleeve lists with seams facing inward, bandages with pustules
References
Frech, Fritz. 1897. Lethaea Geognostica oder Beschreibung und Abbildung für die Gebirgs-Formationen bezeichnendsten Versteinerungen, Herausgegeben von einer Vereinigung von Palaeontologen, 1. Theil, Lethaea Palaeozoica. E. Schweizerbart'sche Verlagshandlung. Stuttgart. 690 p.