Volgens de Franse geograaf Numa Broc, vond Terra Australis zijn meest bezielende illustrator in de stuurman-cartograaf van Le Havre, Guillaume Le Testu. ###>Renaissance mapmakers such as those based in Dieppe relied heavily on each other's work, as well as on maps from previous generations, and thus their maps represented a mixture of old and new data and even differing conceptualizations of space, often coexisting uneasily in the same map.