• Corpus ID: 4276137

Graptolite Zonation in the la 1 e Wenlock ( Early Silurian ) , with a New Graptolite-Brachiopod Fauna from New South Wales

  title={Graptolite Zonation in the la 1 e Wenlock ( Early Silurian ) , with a New Graptolite-Brachiopod Fauna from New South Wales},
  author={Richard Barrie Rickards},
The Panuara Formation at Cobblers Creek near Orange, New South Wales, Australia has yielded a graptolitebrachiopod fauna assigned to the sherrardae sub-Biozone (late Wenlock: Early Silurian). The sherrardae subBiozone as defined here is equivalent to the praedeubeli subBiozone, and is the lowest part of the ludensis Biozone. The ludensis Biozone is reappraised following restudy of the type specimens of Monograptus ludensis, which are shown to exhibit growth stages from the deubeli to the… 


Late Wenlock – Ludlow (Silurian) graptolite extinction, evolution, and biostratigraphy: perspectives from Arctic Canada
  • A. Lenz
  • Environmental Science, Geography
  • 1993
Late Wenlock – early Ludlow was a period of profound change in the graptolite world and two "crises" are evident. The most important changeover occurred within the late Wenlock Homerian Stage, during
Wenlockian graptolite reference section, Clearwater Creek, Nahanni National Park, Northwest Territories, Canada
A sequence of 20 m of Wenlockian graptolite-bearing strata is described from southern Northwest Territories. The sequence is relatively rich in graptolites and represents the best Wenlockian
Wenlock–Ludlow graptolite biostratigraphy and extinction: a reassessment from the southwestern Iberian Peninsula (Spain and Portugal)
A detailed reexamination of a key Wenlock–Ludlow transition section in the Valle syncline region, Spain, and the incorportation of data from a coeval section in the Barrancos area, Portugal, both
Wenlock, Ludlow, and Pridoli? graptolites from Yulin, Guangxi, China
Late Wenlock and Ludlow transition graptolites are better developed and more diverse in the Yulin region of Guangxl Province, South China, than elsewhere in China. The upper Homerian (upper Wenlock)
New upper Homerian (uppermost Wenlock, Silurian) monograptids from Arctic Canada
  • A. Lenz
  • Environmental Science, Geography
  • 1994
Five species of new or little-known upper Homerian (uppermost Wenlock) graptolites are described from the Arctic Islands. These are Lobograptus? sherrardae (Sherwin), Lobograptus? aff. sherrardae,
Uppermost Wenlock and lower Ludlow plectograptine graptolites, Arctic Islands, Canada; new isolated material
  • A. Lenz
  • Geology, Environmental Science
  • 1994
Beautifully preserved, isolated and uncompressed plectograptine graptolites from the uppermost Wenlock “Pristiograptus” ludensis Biozone and the lower Ludlow Lobograptus progenitor Biozone are
Llandoverian and Wenlockian Cyrtograptus,and some other Wenlockian graptolites from Northern and Arctic Canada
  • A. Lenz
  • Environmental Science, Geography
  • 1978
Adaptive radiation of monograptids after the Late Wenlock crisis
The bulk of the later monograptids of Gorstian and Ludfordian age may be derived from the P. dubius stem lineage, because its morphological spectrum and evolutionary potential were preserved, in spite of numerous speciation events, until the early Pridoli.
The Lower Ludlow Formation and its Graftolite-Fauna
  • E. M. Wood
  • Geology, Environmental Science
    Quarterly Journal of the Geological Society of London
  • 1900
I. Introduction. The Lower Ludlow Shales, which form the lowest section of the Ludlow division of the Silurian System, are most typically developed in the neighbourhood of the picturesque old town of
Families of Retiolitida and their phylogenetic relations
Summary Isolated material of retiolitid graptolites from boreholes in the Russian and Siberian platforms is described and has enabled a reassessment of the classification and phylogeny of this large