Banksieaephyllum is a plant genus that encompasses organically preserved fossil leaves that can be attributed to the Proteaceae tribe Banksieae, but cannot be attributed to a genus. Before 1950, many fossil leaves were attributed to the genera Banksia and Dryandra. In most cases, leaves with triangular lobes were associated with Dryandra, and leaves with serration were associated with Banksia. In 1950, Isabel Cookson and Suzanne Duigan showed this policy to be flawed, by demonstrating that the leaves of the two genera cannot be reliably distinguished. Since these two genera then comprised tribe Banksieae, Cookson and Duigan erected Banksieaephyllum to contain such leaves.