")Furthermore, Robinson & Lobel (2013) argue that Dupaningan Agta, Pahanan Agta, Casiguran Agta, Nagtipunan Agta, Dinapigue Agta, and Paranan do not belong to the Northern Cordilleran branch, but rather a new branch that they call "Northeastern Luzon", which they consider to be a primary branch of the Northern Luzon (Cordilleran) group.