The members of the extinct mammalian order Creodonta displayed plantigrade locomotion. This may have led to their extinction as they were supplanted by the more efficient Carnivora. It seems that at least some pterosaurs and lizards were plantigrade as well.
Sources of energy for increased metabolic demand during metamorphosis of the abalone Haliotis rufescens (Mollusca).
Dec 01, 1996; Introduction Metamorphosis of marine invertebrates from a pelagic larva to a juvenile can involve reorganization of existing...