Give the technical terms used for the following:
Remains of an organism of a former geological age.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the technical term used to describe the remains of an organism from a former geological age.

2. **Identifying the Term**: The technical term for the remains of an organism that lived in a previous geological period is "fossil."

3. **Defining Fossils**: Fossils are preserved traces or remains of organisms that existed in the past but are now extinct. They can include bones, shells, imprints, or even traces of behavior like footprints.

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