Chronology is defined as a sequential order of events.
Answer:
The first trilobite species went extinct and its ecological niche was occupied by another species, which may have evolved from the first cap
Explanation:
Considering the knowledge of geography and the situation you described in the text, the correct answer is that ", the Trilobite species went extinct and its ecological niche was occupied by another species, which may have evolved from the first cap.
Earth is at perihelion when it is closest to the Sun, sometime after the Dcember Solstice.