THE BIGGEST FOSSIL MAYFLY (INSECTA: EPHEMERIDA = EPHEMEROPTERA) FROM THE UPPER PERMIAN LOCALITY OF ISADY, NORTHERN EUROPEAN RUSSIA. –

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith