A Plurality of Elders was the Standard Structure

via Cannon Fodder:

Birth and Origin of the Pope by Lucas Cranach“In sum, the NT texts and texts from the early second century indicate that a plurality of elders was the standard structure in the earliest stages. But, as noted above, the idea of a singular bishop began to dominate by the end of the second century.”

Read more: http://michaeljkruger.com/were-early-churches-ruled-by-elders-or-a-single-bishop/