The wing venation of a new fossil species, reconstructed using geometric morphometrics, adds to the rare fossil record of Triassic Gondwanian Odonata - Centre des Sciences de la COnservation Accéder directement au contenu
Article Dans Une Revue Arthropod Structure and Development Année : 2021

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

Résumé

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.
Fichier principal
Vignette du fichier
S146780392100030X.pdf (16.97 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

mnhn-03223703 , version 1 (24-05-2023)

Licence

Paternité - Pas d'utilisation commerciale

Identifiants

Citer

Isabelle Deregnaucourt, Jérémie Bardin, John M 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, 2021, 63, ⟨10.1016/j.asd.2021.101056⟩. ⟨mnhn-03223703⟩
42 Consultations
51 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More