Pygmy hippopotamus the pygmy hippopotamus, are considered dwarf hippopotamuses, rather than pygmies. They are likely descended from a full-sized species of European hippopotamus, and reached their small size through the evolutionary process of insular dwarfism which is common on islands; the ancestors of pygmy hippopotami were also small and thus there was never a dwarfing process. There were also several species of pygmy hippo on the island of Madagascar (see Malagasy hippopotamus). Pygmy hippos share the same general form as a hippopotamus. They have a graviportal skeleton, with four stubby legs and four toes on each foot, supporting a portly frame. The
Jugulator (mammal) displayed these behaviours. "Jugulator" occurs in the mid-Cretaceous deposits of the Cedar Mountain Formation, where several of North America's more iconic dinosaurs like "Utahraptor" and "Cedarosaurus" occur. A large variety of mammal species are known from here as well, including other eutriconodonts like "Astroconodon" and "Corviconodon" as well as multituberculates like "Cedaromys" and "Janumys" and several therian mammals such as "Montanalestes" and "Atokatheridium". These diverse mammal faunas offer a transition from dominant taxa in the Early Cretaceous and the multituberculate and therian dominated laurasian mammalian faunas of the Late Cretaceous. Jugulator (mammal) Jugulator is a genus of extinct mammal from