What does the term "palaeontological evidence for evolution" refer to?

Paleontology is the scientific study of the life of the geologic past that involves the analysis of plant and animal fossils, including those of microscopic size, preserved in rocks.

The term "palaeontological evidence for evolution" refers to fossils.

These traces of ancient life preserved in a geological setting, provide a direct link to the lifestyles, environments, and climatic conditions of the past. They demonstrate how life, the environment, and the climate have evolved over time, as well as how living things have reacted to those changes.