A header for an agricultural vehicle including a header frame, and at least one row unit supported by the header frame. The at least one row unit including a pair of gatherers configured for conveying a crop material. Each gatherer including a chain and a plurality of plates connected to the chain. The plurality of plates at least partially overlap to define a conveying floor that has a continuous upper portion for receiving and transporting a dislodged crop material and an outer periphery for gathering the crop material.