When very few fossils are found during a specific time in earth’s geologic history, scientist would suggest this incident as a period of rapid species development.
<u>EXPLANATION:</u>
Fossil is defined as the remains or leftover of species in the planet in which the imprint is embedded in a rock or in a pattern form.
There are various kinds of fossils and these fossil are formed according to various situations.
The four types of fossils are mold, cast, trace, and true form fossils.