Rocks Kept in a Warehouse For Decades Held a Major Clue to Complex Life
ScienceAlert • • science
Key Points:
- Researchers studied ancient mudstone cores from Darwin, Australia, containing microfossils dating back 1.75 billion years, identifying the oldest known eukaryote fossils globally.
- Eukaryotes, which include all complex life forms, evolved from a symbiotic union of prokaryotic microbes, and their fossils show cellular complexity absent in prokaryotes.
- The study found eukaryote fossils only in oxygenated marine environments, supporting the idea that early eukaryotes depended on oxygen despite some modern eukaryotes thriving without it.
- These findings help clarify the environmental conditions that drove the major evolutionary leap to complex life and provide insight into the origins of eukaryotes.
- Ongoing research into these ancient microfossils may further illuminate the evolutionary history of life on Earth and humanity's place in the cosmos.