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30,000-year-old fossilized vulture feathers 'nothing like what we usually see' preserved in volcanic ash
"Fossil feathers are usually preserved in ancient mudrocks laid down in lakes or lagoons. The fossil vulture is preserved in ...
PBS6y
Anatomy of Nyiragongo
Tephra is a general term for fragments of volcanic rock and lava that are blasted into the air by explosions or carried upward by hot gases. Tephra includes large, dense chunks, light rock debris ...