macrauchenid References Images macrauchenid fossil mammal Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: litopternSome of the macrauchenids survived the intrusion of more advanced mammals from North America and persisted well into the Pleistocene Epoch. Read MoreSome of the macrauchenids survived the intrusion of more advanced mammals from North America and persisted well into the Pleistocene Epoch. Read More