Some of the oldest evidence of life on Earth is 3.49-billion-year-old fossilised remains of microbial mat structures, which look like wrinkle marks in rocks, found in the Pilbara region of Western Australia. Also found in the Pilbara region are fossilised remains of stromatolites.
What is the first form of life seen?
The earliest life forms we know of were microscopic organisms (microbes) that left signals of their presence in rocks about 3.7 billion years old. The signals consisted of a type of carbon molecule that is produced by living things.
Where did the first life form appear?
The first life may have developed in undersea alkaline vents, and was probably based on RNA rather than DNA. At some point far back in time, a common ancestor gave rise to two main groups of life: bacteria and archaea.
Where is the first form of life seen quizlet?
Fossils of stromatolites in Australia date back over 3.4 billion years are among the earliest evidence of life on Earth.