A fossilized griffon vulture feather from the Colli Albani volcanic complex near Rome has revealed a new way that soft tissues can turn into stone.
The feather, buried about 30,000 years ago in volcanic ash, still preserves intricate microscopic…
A fossilized griffon vulture feather from the Colli Albani volcanic complex near Rome has revealed a new way that soft tissues can turn into stone.
The feather, buried about 30,000 years ago in volcanic ash, still preserves intricate microscopic…