The World Around Us

Interpretive drawing of the earliest known fossil Lamprey (Priscomyzon riniensis), reported from the South African Devonian in 2006.

Interpretive drawing of the earliest known fossil Lamprey (Priscomyzon riniensis), reported from the South African Devonian in 2006. The fossil is 1.75 inches (42 mm) long.

Credit: Gess (2006); University of Chicago Medical Center