The earliest known evidence of photosynthetic structures has been identified inside a collection of the enigmatic cylindrical microfossils Navifusa majensis from the 1.75-billion-year-old McDermott Formation in Australia. Navifusa majensis microfossils: (a) Navifusa majensis from the McDermott Formation, Tawallah Supergroup, northern Australia; (b) Navifusa majensis from the Grassy Bay Formation, Shaler Supergroup, Arctic Canada; (c) Navifusa majensis...
