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Monograptus
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Neograptina
Family:
Monograptidae
Formal Genus Name and Reference:
Monograptus GEINITZ, 1852, p. 32
Type Species:
*Lomatoceras priodon Bronn, 1835, SD BASSLER, 1915b, p. 822
Images
(Click to enlarge in a new window)
Fig. 300,5a-b. * M. priodon (Bronn), 5a, holotype, fragment (Bronn, 1835, pl. 1.13, not found in the Bronn collection at the Museum of Comparative Zoology, Harvard University, Cambridge, MA, USA (personal communication, Jessica D. Cundiff, 2014), scale unknown, 56 , proximal end in relief, SMF 75780, glacial boulder, scale bar, 1 mm (Maletz, 2017a, pl. 15B).
Synonyms
Geographic Distribution
worldwide
Age Range
Beginning Stage in Treatise Usage:
Silurian, Llandovery (Telychian, Spirograptus guerichi Biozone)
Beginning International Stage:
Telychian
Fraction Up In Beginning Stage:
0
Beginning Date:
438.59
Ending Stage in Treatise Usage:
Silurian (Wenlock, Homerian, Colonograptus praedeubeli-deubeli Biozone)
Ending International Stage:
Homerian
Fraction Up In Ending Stage:
0
Ending Date:
426.74
Description
Tubarium straight or dorsally curved proximally and then straight, thecae hooked with or without paired apertural spines or processes, thecal apertures face proximally or proximo-dorsally, thecae overlap, typically for half their length or more distally
References
Geinitz, H. B. 1852. Die Versteinerungen der Grauwackenformation in Sachsen und den angrenzenden Länder-Abtheilungen. Heft 1. Die Silurische Formation. Die Graptolithen, ein monographischer Versuch zur Beurtheilung der Grauwackenformation in Sachsen und den angrenzenden Länderabtheilungen sowie der Silurischen Formation überhaupt. Verlag von Wilhelm Engelmann. Leipzig. 57 p., 6 pl .
Museum or Author Information
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Neograptina
Family:
Monograptidae
Formal Genus Name and Reference:
Monograptus GEINITZ, 1852, p. 32
Type Species:
*Lomatoceras priodon Bronn, 1835, SD BASSLER, 1915b, p. 822
Images
(Click to enlarge in a new window)
Fig. 300,5a-b. * M. priodon (Bronn), 5a, holotype, fragment (Bronn, 1835, pl. 1.13, not found in the Bronn collection at the Museum of Comparative Zoology, Harvard University, Cambridge, MA, USA (personal communication, Jessica D. Cundiff, 2014), scale unknown, 56 , proximal end in relief, SMF 75780, glacial boulder, scale bar, 1 mm (Maletz, 2017a, pl. 15B).
Synonyms
Geographic Distribution
worldwide
Age Range
Beginning Stage in Treatise Usage:
Silurian, Llandovery (Telychian, Spirograptus guerichi Biozone)
Beginning International Stage:
Telychian
Fraction Up In Beginning Stage:
0
Beginning Date:
438.59
Ending Stage in Treatise Usage:
Silurian (Wenlock, Homerian, Colonograptus praedeubeli-deubeli Biozone)
Ending International Stage:
Homerian
Fraction Up In Ending Stage:
0
Ending Date:
426.74
Description
Tubarium straight or dorsally curved proximally and then straight, thecae hooked with or without paired apertural spines or processes, thecal apertures face proximally or proximo-dorsally, thecae overlap, typically for half their length or more distally
References
Geinitz, H. B. 1852. Die Versteinerungen der Grauwackenformation in Sachsen und den angrenzenden Länder-Abtheilungen. Heft 1. Die Silurische Formation. Die Graptolithen, ein monographischer Versuch zur Beurtheilung der Grauwackenformation in Sachsen und den angrenzenden Länderabtheilungen sowie der Silurischen Formation überhaupt. Verlag von Wilhelm Engelmann. Leipzig. 57 p., 6 pl .