Muscle protractor pterygoidei et quadrati

{{Short description|Cranial muscle in birds}}

The M. protractor pterygoidei et quadrati is a cranial muscle that pulls the streptostylic quadrate dorsorostrally in birds.{{Cite book |last1=Hanken |first1=James |url=https://books.google.com/books?id=mTpJm8MaIF4C |title=The Skull, Volume 2: Patterns of Structural and Systematic Diversity |last2=Hall |first2=Brian K. |date=1993-09-15 |publisher=University of Chicago Press |isbn=978-0-226-31568-3 |pages=423 |language=en}}