By the power of truth, I, while living, have conquered the universe.
Posted by: Wolverfrog
It looks like an Ancient Human ship from the Halo 4 terminals.
I thought that too, and that could be supported by 343 Guilty Spark's speculation that the occupants were originally catalogued on the Ring - we see plenty of examples of this in Primordium and the Ring the Didact goes to with the Composer in the Terminals.