The pterygoid and quadrate bones present no difference.
"The Variation of Animals and Plants Under Domestication, Vol. I." by Charles Darwin
The void area medial to the palatine and anterior to the pterygoid does not fit any bone which we can recognize as the parasphenoid.
"A New Order of Fishlike Amphibia From the Pennsylvanian of Kansas" by Theodore H. Eaton
The nasal bones which, together with the vomer, form the nose, are likewise dermal bones, and so are the pterygoids and palatines.
"Degeneracy" by Eugene S. Talbot
Pterygoid bones either in contact or separate.
"The Cambridge Natural History, Vol X., Mammalia" by Frank Evers Beddard