Bird-Tracks

“Footprints resembling those birds are found on red argillaceous sandstones in the valley of Connecticut river, North America. These sandstones, though long considered of a much older date, were referred by the brothers Rogers to the oolitic period.” — Chambers, 1881

Keywords

bird, stone, track, Bird-track, bird-tracks, bird track, bird tracks, argillaceous, sandstones

Galleries

Bird Anatomy

Source

William & Robert Chambers Encyclopaedia - A Dictionary of Universal Knowledge for the People (Philadelphia, PA: J. B. Lippincott & Co., 1881)

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