Which is NOT part of the fossil record?

imprint

preserved remains

fossil bones

living unicellular organisms

Living unicellular organisms are not a part of the fossil record.

Explanation:

Fossils are the preserved remains or impression of animals or plants that lived in the past. The scientific study of fossils is known as paleontology.

The fossil record is a collection of all known fossils which contains information about the ancient environments, the placement of fossils in the surface layers of the earth, the relation between different plants and animals, their habitats etc.

The five types of fossils are mold (the plant or animal decays completely but leaves behind an impression of itself), cast (three-dimensional replica of the hard structures of the plant or animal), imprint (two-dimensional structure), permineralization or petrified (each part of the organism is replaced by minerals, leaving a stone copy of the organism) and trace fossils (show tracks that animals made while moving across soft sediment).