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<==o †PROTOCONODONTIDA |==o †Proconodontidae [paraphyletic] | `-- †Proconodontus `--+--+-- †Fryxellodontidae | `-- †Pygodontidae `--+-- †Cordylodontidae `--+-- †Ansellidae `--+-- †Dapsilodontidae `-- †BelodellidaeReference(s):
Sweet, W. C. & Donoghue, P. C. J., 2001: Conodonts: Past, Present and Future. –Journal of Paleontology: Vol. 75, #6, pp. 1174-1184