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The era that featured long periods with no life forms on Earth is the Hadean Eon, which lasted from about 4.6 billion to 4 billion years ago. During this time, the Earth was still forming, characterized by extreme volcanic activity and a molten surface, making it inhospitable for life. It wasn't until the subsequent Archean Eon, starting around 4 billion years ago, that conditions began to stabilize, allowing for the emergence of the first simple life forms.

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