Adapted from J. W. Schopf’s top ten (1974).

1. Life (and eating)
2. Blue-green algae (photosynthesis)
3. Eukaryotes (reproduction by mitosis)
4. Sex (reproduction by meiosis)
5. Multicellularity
6. Vertebrates
7. Vascular plants
8. Warm-blooded animals
9. Flowering plants
10. Man
11. Muppets

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