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Spirograptus
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Neograptina
Family:
Monograptidae
Formal Genus Name and Reference:
Spirograptus GÜRICH, 1908, p. 34
Type Species:
*Graptolithus turriculatus Barrande, 1850, p. 56, SD BULMAN, 1929, p. 182
Images
(Click to enlarge in a new window)
Fig. 300,8. *S. turriculatus (Barrande), lectotype, NMP L27597, Litohlavy, Czech Republic, scale bar, 5 mm (Štorch, 2000c, Atlas, Folio 1.92)
Synonyms
Geographic Distribution
worldwide
Age Range
Beginning Stage in Treatise Usage:
Silurian (Aeronian, Stimulograptus halli Biozone
Beginning International Stage:
Aeronian
Fraction Up In Beginning Stage:
0
Beginning Date:
440.49
Ending Stage in Treatise Usage:
Llandovery (Telychian, Streptograptus sartorius Biozone)
Ending International Stage:
Telychian
Fraction Up In Ending Stage:
0
Ending Date:
432.93
Description
Tubarium trochospirally coiled, sicula small (<1.5 mm) and dorsally curved, thecae hooked in manner of those of Stimulograptus, and bearing one or two apertural spines, thecal apertures may be symmetrical or asymmetrical resulting from differential development of the apertural margin, thecal overlap is negligible, common canal wide
References
Gürich, Georg. 1908. Leitfossilien. Ein Hilfsbuch zum Bestimmen von Versteinerungen bei geologischen Arbeiten in der Sammlung und im Felde. Erste Lieferung: Kambrium und Silur. (Bogen 1-6, Tafel 1-28 nebst Erklärungen). Verlag Gebrüder Bornträger. Berlin. 95 p., 28 pl.
Museum or Author Information
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Neograptina
Family:
Monograptidae
Formal Genus Name and Reference:
Spirograptus GÜRICH, 1908, p. 34
Type Species:
*Graptolithus turriculatus Barrande, 1850, p. 56, SD BULMAN, 1929, p. 182
Images
(Click to enlarge in a new window)
Fig. 300,8. *S. turriculatus (Barrande), lectotype, NMP L27597, Litohlavy, Czech Republic, scale bar, 5 mm (Štorch, 2000c, Atlas, Folio 1.92)
Synonyms
Geographic Distribution
worldwide
Age Range
Beginning Stage in Treatise Usage:
Silurian (Aeronian, Stimulograptus halli Biozone
Beginning International Stage:
Aeronian
Fraction Up In Beginning Stage:
0
Beginning Date:
440.49
Ending Stage in Treatise Usage:
Llandovery (Telychian, Streptograptus sartorius Biozone)
Ending International Stage:
Telychian
Fraction Up In Ending Stage:
0
Ending Date:
432.93
Description
Tubarium trochospirally coiled, sicula small (<1.5 mm) and dorsally curved, thecae hooked in manner of those of Stimulograptus, and bearing one or two apertural spines, thecal apertures may be symmetrical or asymmetrical resulting from differential development of the apertural margin, thecal overlap is negligible, common canal wide
References
Gürich, Georg. 1908. Leitfossilien. Ein Hilfsbuch zum Bestimmen von Versteinerungen bei geologischen Arbeiten in der Sammlung und im Felde. Erste Lieferung: Kambrium und Silur. (Bogen 1-6, Tafel 1-28 nebst Erklärungen). Verlag Gebrüder Bornträger. Berlin. 95 p., 28 pl.