Proper noun
Alternative form of Zanj
(informal, paleoanthropology, dated) The original specimen of Paranthropus boisei, then known as Zinjanthropus.
Source: en.wiktionary.orgLouis had considered Broom's Paranthropus genus, but rejected it because he believed Zinj was in the Homo ancestral stock but Paranthropus was not. Source: Internet
The Zinj question ultimately became part of the Australopithecus/Paranthropus question (which only applied to the robust Australopithecines). Source: Internet