Iterative evolution, with repetition of heterochronous homeomorph lineages, is the most frequent type of evolution shown by Triassic conodonts. One specific example of such evolutionary modes is given in the present chapter. Like in ammonoids, they are accompanied by typical geometrical simplification during the transition between the ancestors and descendants above the Permian Triassic major mass extinction: the repetition of the ancestral morphogroup Neospathodus is observed at the base of two successive lineages, Clarkina (upper Permian) and Kashmirella-Paragondolella (Lower and Middle Triassic).