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Devonian and Carboniferous dendroid graptolites from Belgium and their significance for the taxonomy of the Dendroidea
Maletz, J.; Mottequin, B.; Olive, S.; Gueriau, P.; Pernègre, V.; Prestianni, C.; Goolaerts, S. (2020). Devonian and Carboniferous dendroid graptolites from Belgium and their significance for the taxonomy of the Dendroidea. Géobios 59: 47-59. https://hdl.handle.net/10.1016/j.geobios.2020.03.003
In: Géobios. Association Européenne de Paléontologie: Lyon. ISSN 0016-6995; e-ISSN 1777-5728, more
Peer reviewed article  

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Keywords
    Acanthograptidae; Dendroidea † [WoRMS]; Graptolithoidea [WoRMS]
    Marine/Coastal
Author keywords
    Devonian; Carboniferous; Graptolites; Acanthograptidae; Belgium;3D-preservation

Authors  Top 
  • Maletz, J.
  • Mottequin, B., more
  • Olive, S., more
  • Gueriau, P.
  • Pernègre, V.
  • Prestianni, C., more
  • Goolaerts, S., more

Abstract
    Devonian and Carboniferous dendroid graptolites from Belgium are evaluated and partly revised. New finds in two different stratigraphic intervals of the ‘Carrière de Lompret’, an active quarry exploiting Frasnian limestones and shales east of Frasnes-lez-Couvin, allow the identification of Callograptus sp. and Dictyonema fraiponti, both belonging to the dendroid family Acanthograptidae. The relatively high diversity of the dendroid graptolite fauna from the Viséan Marbre noir de Denée, one of the few Carboniferous graptolite faunas in the world, can be shown to be based on astogenetic and preservational aspects. Nearly all known specimens can be included in the highly variable Dictyonema fraiponti, a fan-shaped large dendroid species with complex stipes formed from tubular thecae, possessing simple to complex bridges connecting adjacent stipes. Some of the graptolite material is well preserved and provides important information on the tubarium construction of Devonian to Carboniferous dendroid graptolites and, thus, is highly significant for a taxonomic and phylogenetic understanding of the youngest dendroid graptolite faunas worldwide. The genera Callograptus and Ptiograptus are revised based on their type species (Callograptus elegans from Quebec, Canada; Ptiograptus percorrugatus from the Silurian or Devonian of Kentucky, USA) and referred to the Acanthograptidae.

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