Final answer:
The references do not specifically mention the age of fossils Michel Brunet was looking for. Different fossil ages are noted, varying from 14,800-13,800 BP at the Monte Verde site to 3.7 billion-year-old stromatolites and 3.5 billion-year-old microbial mats.
Step-by-step explanation:
Michel Brunet is known for his significant discoveries related to human evolution, but the provided references do not specifically mention fossils that Brunet was searching for. Nevertheless, the references outline a range of different fossil ages from various sites and discoveries. These include the Monte Verde site with evidence dating back to 14,800-13,800 BP, the discovery of the oldest dated art in the African continent from around 25,500 years ago, the ancient stromatolites dating back 3.7 billion years, European cave paintings like those in Chauvet France over 36,000 years old, and the identification of dinosaur embryos from over 200 million years ago. The earliest fossil evidence for life is of microbial mats from 3.5 billion years old. These various ages underscore the depth of time over which paleontologists and archaeologists work, offering a glimpse into the variety of fossils and what they can tell us about earth's long history.