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“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


Bird Anatomy


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


TIFF (full resolution)

2400×1270, 373.2 KiB

Large GIF

1024×541, 58.6 KiB

Medium GIF

640×338, 31.6 KiB

Small GIF

320×169, 12.6 KiB