Panina[2] is a subtribe of tribe Hominini; it comprises all descendants of the human-chimpanzee last common ancestor (LCA) that are not of the branch of human lineage—that is, all those ancestors of the type genus Pan, (chimpanzees and bonobos).

[7] Panina is one of two subtribes of tribe Hominini; the other is Australopithecina (or Hominina).

Regardless, the morphology of S. tchadensis supports the theory that, at and after the divergence, hominins then are unlikely to resemble in appearance(s) with any number of derived characters of their descendants.

[8][9] A genetic study conducted in 2010 surveyed chimpanzee mitochondrial genomes and discovered the presence of an extinct ghost lineage, (i.e., fossil evidence doesn't exist yet) of Panina that diverged around 3.3 mya and began interbreeding with bonobos (Pan paniscus), who then interbred with chimpanzees (Pan troglodytes).

This signature is carried more heavily in P. troglodytes despite having interbred with bonobos first, seeing as how they occupy a greater range.