Gangen van eendagsvliegen (Ephemeroptera) in blootliggende kleilagen in de hoofdgeul van de rivier de Waal

Burrows of Mayflies (Ephemeroptera) found in exposed heavy clay layers in the main channel of the River Waal, the main branch of the Rhine River in the Netherlands were figured and described. They were most likely made by Ephoron virgo (Olivier, 1791). Ephemeropteran burrows are known as ichnofossils from Cainozoic freshwater deposits in Europe (see Uchman et al., 2017).