The One whose Upper-Manipulation-Appendages Sundered the Predators, Leading to their Local Extinction, abbreviated to Upper-Manipulation-Appendages Extinction, is a semi-mythic hero of the Biran. First named as Upper-Manipulation-Appendages of Decidedly Anomalous Strength, at least according to legends, the young Biran grew into a notably large and robust adult, who showed unusual initiative in extirpating dangerous organisms in its reef. It earned its definitive name by leading its neighbors in a systematic campaign which resulted in the extermination of all Biran predators they could find.
Upper-Manipulation-Appendages Extinction's heroic deeds were frequently invoked in the Imperial era, when the Imperious Association of Unified Compacts for the Management of Ecosystems decided to exterminate all non-sentient predators of Biran from all of their colony worlds. After decades of debate on the topic and a few trial programs, a consensus for action developed suddenly in the IAUCME. Without direct consultation with the human populations of those worlds, Biran began to deliberately cause the extinction of any non-sentient organism that regularly attempted to eat them. This caused some degree of friction when the populations of a number of species of charismatic megafauna abruptly collapsed. Captive populations were in most cases successfully maintained.