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

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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https://hal-mnhn.archives-ouvertes.fr/mnhn-03276448
Contributor : Olivier Béthoux Connect in order to contact the contributor
Submitted on : Friday, July 2, 2021 - 10:18:35 AM
Last modification on : Tuesday, July 13, 2021 - 3:28:01 AM
Long-term archiving on: : Sunday, October 3, 2021 - 6:24:19 PM

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

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