Heptaxodontidae is a term that refers to an extinct family of large, herbivorous mammals that lived in the Caribbean islands during the late Pleistocene epoch. Some possible synonyms for this word include the Tainotheriidae, the Antillean sloth family, and the ground sloth family. These names are used to describe different groups of animals that share similar characteristics with heptaxodontids, such as long, curved claws and adaptations for herbivorous diets. However, each synonym may also be used to refer to distinct taxa that may have diverged from heptaxodontids at different points in evolutionary history. Understanding these synonyms is essential for accurately describing the fossil record of Caribbean mammal fauna.