What was period of origin of cyanobacteria?

Explanation

**Step-by-Step Solution:**

1. **Understanding Cyanobacteria**: Cyanobacteria are known as the first oxygenic photosynthetic bacteria. They are significant because they were the first organisms to use sunlight and water to produce food while releasing oxygen as a byproduct.

2. **Identifying the Period of Origin**: The origin of cyanobacteria is linked to a specific geological time frame in Earth's history.

3. **Geological Time Frame**: The evolution of cyanobacteria is estimated to have occurred between 3300 to 3500 million years ago. This was a time when the Earth's atmosphere was still primitive and lacked significant amounts of oxygen.

...