Specifically, the differences between the manus bones of "P. kirkpatricki" and "P. alisonae" confirm the chimera theory (associated fossils belonging to different animals) suggested by Long and Murry.
Concretamente, las diferencias entre los huesos de la mano de "P. kirkpatricki" y "P. alisonae" confirman la teoría de la quimera (fósiles asociados pertenecientes a animales distintos) sugerida por Long y Murry.