Skip to Main content Skip to Navigation
Journal articles

The wing venation of a new fossil species, reconstructed using geometric morphometrics, adds to the rare fossil record of Triassic Gondwanian Odonata

Abstract : Probably the most common rock-imprint fossil-insect remain is an incomplete isolated wing. This pitfall has been traditionally addressed by manually reconstructing missing parts, which is not ideal to comprehend long-term evolutionary trends in the group, in particular for morphological diversity (i.e., disparity) approaches. Herein we describe a new Triassic relative of dragon-and damselflies (Odonata), Moltenophlebia lindae gen. et sp. nov., from the Molteno Formation (Karoo Basin, South Africa), on the basis of three incomplete, isolated wings. In order to provide a reconstruction of the complete wing venation of the species, we formalized and applied a repeatable method aiming at inferring the missing parts of a given specimen. It is based on homologous veins automatically identified thanks to a standardized color-coding. The dedicated script can be applied broadly to the fossil record of insect wings. The species is identified as a member of the Zygophlebiida, within the Triadophlebiomorpha. This discovery, therefore, represents the first ascertained occurrence of the latter group in Gondwana, an area where the fossil record of Odonata is depauperate.
Complete list of metadata

https://hal-mnhn.archives-ouvertes.fr/mnhn-03223703
Contributor : Olivier Béthoux <>
Submitted on : Tuesday, May 11, 2021 - 10:00:59 AM
Last modification on : Monday, May 31, 2021 - 1:52:02 PM

Identifiers

Citation

Isabelle Deregnaucourt, Jérémie Bardin, John Anderson, Olivier Bethoux. The wing venation of a new fossil species, reconstructed using geometric morphometrics, adds to the rare fossil record of Triassic Gondwanian Odonata. Arthropod Structure and Development, Elsevier, 2021, 63, ⟨10.1016/j.asd.2021.101056⟩. ⟨mnhn-03223703⟩

Share

Metrics

Record views

11