Merrifieldia oligocenicus (synonyms Pterophorus oligocenicus) is an extinct moth of the family Pterophoridae. It is the only known fossil of the family Pterophoridae. It was discovered in Aix-en-Provence, Bouches-du-Rhone in France. It is a late Oligocene species, dated to 25–30 million years BP.
Bigot, L., Nel, A. & Nel, J. Description de la première espèce fossile connue de ptérophore. Alexanor. 14: 283-288 (1986).
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