One of the earliest stem-Plecoptera reassessed as a Blattinopsidae (Insecta)

Geodiversitas 48 (10): 179-184, DOI: 10.5252/geodiversitas2026v48a10 ABSTRACT In addition to their significance for ancient biogeography, the earliest occurrences of extant insect groups have gained particular importance over the past decade, as they are critical for temporally calibrating phylogenetic trees.

In this context, the robustness of taxonomic assignments is crucial. The earliest fossil record of putative stoneflies (Plecoptera), from the Pennsylvanian, is based on a very limited number of species. The assignment of one of them, Gulou oudardi Schubnel, Perdu, Roques, Garrouste & Nel, 2019, from the Avion locality (Nord-Pas-Calais basin; France) and known from a single wing, is here reconsidered.