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1. Hemingfordian: The Hemingfordian on the geologic timescale is the North American faunal stage according to the North American Land Mammal Ages chronology (NALMA), typically set from 20,600,000 to 16,300,000 years BP. It is usually considered to overlap ... (Earth) [100%] 2023-08-03 [Hemingfordian]
2. Late Hemingfordian: The Late Hemingfordian North American Stage on the geologic timescale is the North American faunal stage according to the North American Land Mammal Ages chronology (NALMA), typically set from 20,430,000 to 16,300,000 years BP, a period ... (Earth) [70%] 2023-10-31 [Miocene life] [Burdigalian]...
3. Late Hemingfordian: The Late Hemingfordian North American Stage on the geologic timescale is the North American faunal stage according to the North American Land Mammal Ages chronology (NALMA), typically set from 20,430,000 to 16,300,000 years BP, a period ... (Earth) [70%] 2025-05-30 [Miocene life] [Burdigalian]...
4. Hemingfordian North American Stage: The Hemingfordian North American Stage on the geologic timescale is the North American faunal stage according to the North American Land Mammal Ages chronology (NALMA), typically set from 20,600,000 to 16,300,000 years BP. It is usually ... (Earth) [50%] 2022-05-14 [Hemingfordian]