If you see a fossil fish in a museum that is labeled one of the earliest fish known, what era is it probably from?

a. Paleozoic

c. Mesozoic

b. Cenozoic

d. Precambrian

The correct answer for the question that is being presented above is this one: "a. Paleozoic." If you see a fossil fish in a museum that is labeled one of the earliest fish known, the era that that fish belong is surely Paleozoic era. It is one of the early eras of the history of the species.