Democratic Sentinel, Volume 21, Number 33, Rensselaer, Jasper County, 13 August 1897 — Fcssil Butterflies. [ARTICLE]

Fcssil Butterflies.

I<ess than a score of specimens of fossil butterflies—of nearly as many genera— have been found. They occur only in tertiary deposits, which have yielded vast numbers of other objects from tlie small ancient lake of Florissant, in Colorado, were found but eight butterflies. Of the genera represented, two exist to-day in both Europe and America, but the other species are all extinct.