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Cucullograptus
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Neograptina
Family:
Monograptidae
Formal Genus Name and Reference:
Cucullograptus URBANEK, 1954, p. 291
Type Species:
*C. pazdroi, OD
Images
(Click to enlarge in a new window)
Fig. 306,3 a-c. * C. pazdroi, three different views of holotype, glacial boulder, Gdansk-Wrzeszcz, Poland (Urbanek, 1954, fig. 2). Scale bars, 1 mm.
Synonyms
Geographic Distribution
Poland, Czech Republic, Germany, China (Yunnan)
Age Range
Beginning Stage in Treatise Usage:
Silurian, Ludlow (Gorstian, Lobograptus parascanicus Biozone)
Beginning International Stage:
Gorstian
Fraction Up In Beginning Stage:
0
Beginning Date:
426.74
Ending Stage in Treatise Usage:
Silurian (Ludfordian, Cucullograptus rostratus/lower Bohemograptus tenuis Biozone)
Ending International Stage:
Ludfordian
Fraction Up In Ending Stage:
0
Ending Date:
422.73
Description
Narrow, straight, or gently ventrally curved tubarium, small sicula, first theca originated via a primary porus, thecae long, with elongate protheca and short metatheca, thecal aperture slit-like, with complex auriculate lateral apertural lobes, with increasing asymmetry distally, the left apertural lobe overlaps right lobe, restricting thecal aperture
References
Urbanek, Adam. 1954. Some observations on the morphology of Monograptidae. Acta Geologica Polonica 4:291-306.
Museum or Author Information
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Neograptina
Family:
Monograptidae
Formal Genus Name and Reference:
Cucullograptus URBANEK, 1954, p. 291
Type Species:
*C. pazdroi, OD
Images
(Click to enlarge in a new window)
Fig. 306,3 a-c. * C. pazdroi, three different views of holotype, glacial boulder, Gdansk-Wrzeszcz, Poland (Urbanek, 1954, fig. 2). Scale bars, 1 mm.
Synonyms
Geographic Distribution
Poland, Czech Republic, Germany, China (Yunnan)
Age Range
Beginning Stage in Treatise Usage:
Silurian, Ludlow (Gorstian, Lobograptus parascanicus Biozone)
Beginning International Stage:
Gorstian
Fraction Up In Beginning Stage:
0
Beginning Date:
426.74
Ending Stage in Treatise Usage:
Silurian (Ludfordian, Cucullograptus rostratus/lower Bohemograptus tenuis Biozone)
Ending International Stage:
Ludfordian
Fraction Up In Ending Stage:
0
Ending Date:
422.73
Description
Narrow, straight, or gently ventrally curved tubarium, small sicula, first theca originated via a primary porus, thecae long, with elongate protheca and short metatheca, thecal aperture slit-like, with complex auriculate lateral apertural lobes, with increasing asymmetry distally, the left apertural lobe overlaps right lobe, restricting thecal aperture
References
Urbanek, Adam. 1954. Some observations on the morphology of Monograptidae. Acta Geologica Polonica 4:291-306.