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

Béthoux, Olivier; Norrad, Rowan E.; Stimson, Matthew R.; King, Olivia A.; Allen, Luke F.; Deregnaucourt, Isabelle; Hinds, Steven J.; Lewis, Jake H.; Schneider, Jörg W.

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 inline-formula+ CuA fusion, a CuA inline-formula+ CuP fusion, and a CuP inline-formula+ AA fusion, but it lacks the “extended” MP inline-formula+ Cu inline-formula M5inlinescrollmathml / 8pt14ptsvg-formulamathimg93e47eb16cb371fe6916d3191efc4f1d fr-24-207-2021-ie00001.svg8pt14ptfr-24-207-2021-ie00001.png  CuA fusion and the “extended” (CuP inline-formula M6inlinescrollmathml / 8pt14ptsvg-formulamathimg073414a2b77546d8d5847ae97897d626 fr-24-207-2021-ie00002.svg8pt14ptfr-24-207-2021-ie00002.png  CuA inline-formula+ CuP) inline-formula+ 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.



Béthoux, Olivier / Norrad, Rowan E. / Stimson, Matthew R. / et al: A unique, large-sized stem Odonata (Insecta) found in the early Pennsylvanian of New Brunswick (Canada). 2021. Copernicus Publications.


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Rechteinhaber: Olivier Béthoux et al.

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