The study of fossils falls under a branch of science called â€śPalaeontologyâ€ť. Itâ€™s also known as Paleontology which covers a wider range of prehistoric sciences.
Paleontologists specialise in different fossil groups and studies, focusing on one or more areas of prehistoric study.
For example, one palaeontologist might be an expert in dinosaur fossils while another palaeontologist could have expertise in plant fossils. Both these professionals will be classed as palaeontologists even though they have very different skill sets.
Palaeontologists is quite similar but not the same as geology and it also involves a bit of biology. Paleontology is like a bridge between these two subjects.