A unique, large-sized stem Odonata (Insecta) found in the early Pennsylvanian of New Brunswick (Canada) - Archive ouverte HAL Access content directly
Journal Articles Fossil Record Year : 2021

A unique, large-sized stem Odonata (Insecta) found in the early Pennsylvanian of New Brunswick (Canada)

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Rowan E Norrad
  • Function : Author
Matthew R Stimson
  • Function : Author
Olivia A King
  • Function : Author
Isabelle Deregnaucourt
  • Function : Author
  • PersonId : 1098492
Steven J Hinds
  • Function : Author
Jake H Lewis
  • Function : Author
Jörg W Schneider
  • Function : Author

Abstract

A stem relative of dragon-and damselflies, Brunellopteron norradi Béthoux, Deregnaucourt and Norrad gen. et sp. nov., is documented based on a specimen found at Robertson Point (Grand Lake, New Brunswick, Canada; Sunbury Creek Formation; early Moscovian, Pennsylvanian) and preserving the basal half of a hindwing. A comparative analysis of the evolution of wing venation in early odonates demonstrates that it belongs to a still poorly documented subset of species. Specifically, it displays a MP + CuA fusion, a CuA + CuP fusion, and a CuP + AA fusion, but it lacks the "extended" MP + Cu / CuA fusion and the "extended" (CuP / CuA + CuP) + AA fusion, the occurrence of which is typical of most Odonata, including Meganeura-like species. The occurrence of intercalary veins suggests that its closest relative might be Gallotypus oudardi Nel, Garrouste and Roques, 2008, from the Moscovian of northern France.
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Dates and versions

mnhn-03276448 , version 1 (02-07-2021)

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Olivier Bethoux, Rowan E Norrad, Matthew R Stimson, Olivia A King, Luke F Allen, et al.. A unique, large-sized stem Odonata (Insecta) found in the early Pennsylvanian of New Brunswick (Canada). Fossil Record, 2021, 24 (2), pp.207-221. ⟨10.5194/fr-24-207-2021⟩. ⟨mnhn-03276448⟩
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