The uniface medal bears bust of Ferdinand Vandeveer Hayden, left. Around top, FERDINAND·VANDEVEER·HAYDEN; under truncation, M·D·C·C·C·LXXXVIII; signed and dated at bottom with (JF monogram ) / MC - MVI

This medal was awarded by the Philadelphia Academy of Natural Sciences for recognition of the best publication, exploration, discovery or research in the natural sciences of geology and paleontology. Established in 1888, the bronze medal was accompanied by a cash award of $300 and was awarded every three years.

References:   Marqusee 145