Did mammals co-exist with dinosaurs?
Answer Yes
Mammals have been around for at least 225 million years, first appearing in the Late Triassic period.
Asked by Dan Henry · Last updated 5 years ago · 299.7K views
Mammals have been around for at least 225 million years, first appearing in the Late Triassic period.
Asked by Dan Henry · Last updated 5 years ago · 299.7K views
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