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Neodiversograptus
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Neograptina
Family:
Monograptidae
Formal Genus Name and Reference:
Neodiversograptus URBANEK, 1963, p. 149
Type Species:
*Monograptus nilssoni Lapworth, 1876c, p. 315, sensu URBANEK, 1954, p. 300, OD
Images
(Click to enlarge in a new window)
Fig. 307,4a-c. *N. nilssoni (Lapworth), 4a, neotype (Palmer 1971b, p. 97), Long Mountain Shales, Welsh Borderlands, UK (Wilkinson, 2018c, Atlas, Folio 3.58), 4 b-c, proximal ends without (4b) and with (4c) sicular cladium, Silurian, Ludlow, Poland (Urbanek, 1997b, fig. 2A-B). Scale bars, 1 mm.
Synonyms
Geographic Distribution
worldwide (although only questionably from Arctic Canada)
Age Range
Beginning Stage in Treatise Usage:
Silurian, Ludlow (Gorstian, Neodiversograptus nilssoni Biozone)
Beginning International Stage:
Gorstian
Fraction Up In Beginning Stage:
0
Beginning Date:
426.74
Ending Stage in Treatise Usage:
Silurian (Ludfordian, Saetograptus leintwardinensis Biozone)
Ending International Stage:
Ludfordian
Fraction Up In Ending Stage:
0
Ending Date:
422.73
Description
Proximally gently dorsally curved monograptid stipe, distally straight or dorso-ventrally curved, forming bipolar tubarium in mature specimens, sicula with long dorsal apertural spine, with its further prolongation producing secondary nema for sicular cladium, thecae tubular, with apertures either straight or with slightly elevated margins, ventral thecal wall at low angle to tubarium axis
References
Urbanek, Adam. 1963. On generation and regeneration of cladia in some Upper Silurian monograptids. Acta Palaeontologica Polonica 8 (2):135-254.
Museum or Author Information
Classification
Phylum:
Hemichordata
Class:
Pterobranchia
Order:
Graptoloidea
Superfamily:
Neograptina
Family:
Monograptidae
Formal Genus Name and Reference:
Neodiversograptus URBANEK, 1963, p. 149
Type Species:
*Monograptus nilssoni Lapworth, 1876c, p. 315, sensu URBANEK, 1954, p. 300, OD
Images
(Click to enlarge in a new window)
Fig. 307,4a-c. *N. nilssoni (Lapworth), 4a, neotype (Palmer 1971b, p. 97), Long Mountain Shales, Welsh Borderlands, UK (Wilkinson, 2018c, Atlas, Folio 3.58), 4 b-c, proximal ends without (4b) and with (4c) sicular cladium, Silurian, Ludlow, Poland (Urbanek, 1997b, fig. 2A-B). Scale bars, 1 mm.
Synonyms
Geographic Distribution
worldwide (although only questionably from Arctic Canada)
Age Range
Beginning Stage in Treatise Usage:
Silurian, Ludlow (Gorstian, Neodiversograptus nilssoni Biozone)
Beginning International Stage:
Gorstian
Fraction Up In Beginning Stage:
0
Beginning Date:
426.74
Ending Stage in Treatise Usage:
Silurian (Ludfordian, Saetograptus leintwardinensis Biozone)
Ending International Stage:
Ludfordian
Fraction Up In Ending Stage:
0
Ending Date:
422.73
Description
Proximally gently dorsally curved monograptid stipe, distally straight or dorso-ventrally curved, forming bipolar tubarium in mature specimens, sicula with long dorsal apertural spine, with its further prolongation producing secondary nema for sicular cladium, thecae tubular, with apertures either straight or with slightly elevated margins, ventral thecal wall at low angle to tubarium axis
References
Urbanek, Adam. 1963. On generation and regeneration of cladia in some Upper Silurian monograptids. Acta Palaeontologica Polonica 8 (2):135-254.