👉 Palaeogenesis is a scientific theory that proposes that organisms on Earth first appeared in the Paleozoic era, around 2.4 billion years ago. This theory posits that these early forms evolved from simple multicellular organisms, such as bacteria and fungi, which were then transformed into more complex and diverse forms through a series of evolutionary processes. Palaeogenesis suggests that the earliest life on Earth was characterized by an abundance of single-celled organisms that could survive in harsh conditions. These organisms would