Fig 3. Species surveyed for post-embryonic nephrogenesis.

Cladogram displaying species tested for presence of nephrogenesis in juvenile (J) or adult (A) kidney. Two species of monotremes, Tachyglossus aculeatus (short-beaked echidna) and Ornithorhynchus anatinus (platypus), were used for comparison as the most basal mammalian group. As with other mammals, no evidence of nephrogenesis was detected in the monotreme species. Post-embryonic nephrogenesis was detected in all major reptilian groups surveyed. Species names in light gray did not display evidence of nephrogenesis. NT = not tested.