the palezoic and the period is devonian!!
your welcome!
Paleozoic Era
Fish first developed in the Paleozoic Era
Well they appeared in the Precambrian Era, as bacteria. The Paleozoic, as trilobites, brachiopods and fish.
the paleozoic era
Man appeared in the era of Cenozoic.
The fish appear quite large.
If you are asking what era the fish ORIGINATED, then your answer is the Cambrian Period, which was during the Paleozoic Era (544-245 million years ago). They started off as invertebrates, however. The first vertebrate that was a fish was the jawless fish in the Ordovician period. The first vertebrate that was a fish was the jawed fish in the Silurian period.
Vertebrates first appeared during the Paleozoic era.
probably mesozoic era
the Cenozoic era
The Mesozoic Era
Mesozoic