Oryctodiplax is an extinct genus of dragonfly in the family Libellulidae.Encyclopedia of life
Fossils (mainly larvae) of these dragonflies have been found in the Miocene of Italy (age range: from 7.246 to 5.332 million years ago).Fossilworks
The type species is Oryctodiplax gypsorum. It was a species resistant to a highly saline environment, formed in the Mediterranean salinity crisis, occurred during the latest stage of the Miocene, with the isolation of the Mediterranean sea and its subsequent drying.Thomas SCHLÜTER, Rolf KOHRING and Hans-Jochen GREGOR Dragonflies preserved in transparent gypsum crystals from the Messinian (Upper Miocene) of Alba, northern Italy
References
O. Cavallo and P. A. Galletti. 1987. Studi di Carlo Sturani du Odonati e altri insetti fossili del Messiniano albese (Piemonte) con descrizione di Oryctodiplax gypsorum n. gen., n. sp. (Odonata, Libellulidae). Bollettino della Società Paleontologica Italiana 26(1-2):151-176