In 1860 Bavarian quarry workers discovered the impression of a feather in a limestone slab dating to the Mesozoic era. ██ ███ ██████████ ████ ███████ ████ █████ █████████ ████ █████ ███ █████ ██ ███ ████████ ███ ███ █████ ███ █████████████ ██ ███████████ █ ███████ ██████████████ ██ ████ ████ ███ █████ ██ █████████ ███ ███ ███████ ██ █ █████ ████████████ ███████████████ ████████ █████ ██████████ ████ ████ ████ ███ ████████ █████████████████ ███ ████████ █████ ██ ████ █████
The argument assumes which one ██ ███ ██████████
The creature to █████ ███ ███████ ████████ ███ █ ██████████ ██ ███ ███████████
Birds with such ████████ ████ ████████ ██ ███████ ██ █████ ████ ██████████████ █████████
In the Mesozoic ████ ██ █████████ █████ ████ █████ ███ ████ █████████
The feather belonged ██ █ ████████ ████████ ████ ███ ███████ █ █████████ ███ █ █████ ███ ████████████ ███████ █████
The earliest bird ████ ██ ██ ███████ ███████
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