Provisionally this genus has been grouped with the Ratitae, which at any rate are a heterogenous assembly.
The presence of human skull fragments would suggest that this deposit was either not entirely of domestic refuse or, of heterogenous origin.
A theory which seems plausible is that which assumes them to have been a heterogenous collection of Mongol, Tungus, Turki and perhaps even Finnish hordes under a Mongol military caste, though the Mongolo-Tungus element probably predominated.
End systems will arbitrarily roam and network connectivity will be very heterogenous.
This kind of reaction is said to have involved heterogenous catalysis.