A pair of fossilised leaves from EoceneBaltic amber have been attributed to the Roridulaceae. The amber is from sediments dated to 35–47 million years ago. Definite fossils of carnivorous plant traps have never previously been found. Their location in the Baltic suggests that the genus Roridula, although now restricted to South Africa, was much more widespread in the past.
^Andrew Millington; Mark Blumler; Udo Schickhoff (2011-09-22). The SAGE Handbook of Biogeography. SAGE Publications. pp. 143–. ISBN978-1-4462-5445-5. Retrieved 2013-08-07. The Cape Floristic Region in South Africa is comparatively rich in endemic flowering-plant families. Five families of angiosperms (Penaeaceae, Roridulaceae, Geissolomataceae, Grubbiaceae, and Lanariaceae) are endemic to that region ...
^Sadowski, E.M., LJ. Seyfullah, F. Sadowski, A. Fleischmann, H. Behling & A.R. Schmidt (2014). "Carnivorous leaves from Baltic amber." PNAS, published online on 1 December 2014. doi:10.1073/pnas.1414777111
Anderson, B (2005). "Adaptations to foliar absorption of faeces: a pathway in plant carnivory". Annals of Botany95 (5): 757–761. doi:10.1093/aob/mci082.